单选题The secretary is very diligent; ______ she can't get admission of the boss. A. however B. therefore C. so D. although

单选题Directions: This task is the same as Task 1. The 5 questions or unfinished statements are numbered 41 to 45. Wireless phones are available on today's consumer market. Like most people, you're probably interested in a little handheld number. They're small and light. Transmitting(发送) 0.2 to 0.6 watt of power, these wireless phones come in a variety of models, digital cellular and digital PCS ( personal communications service) models, as well many cool shapes and colors. How do you choose a mobile when two or three models look equally good? Think about these characteristics: A big, bright display--The more you use your phone, the more you'll appreciate an ease-to-read display. Light weight--Most wireless phones these days are tiny, so why take a 10-ounce model when a 6-ounce one works just as well? Accessories(配件)--If you want a certain type of hands-free car kit(成套用具) or other accessory, make sure it's available for your specific phone; Battery life--Look for a phone that allows you to talk for a long time; External volume control--Take a phone with an external volume control. You'll appreciate it the first time you use it in a noisy place; Easy ringer volume control--Buy a phone that rings loudly enough for a moderately noisy environment, but is easy to tone down for, say, a funeral. Even better, get a phone with a vibrating alert.

单选题 Antarctica, the coldest place on the Earth, is too cold for most creatures. However, things are different for penguins. Several types of penguins make their home in Antarctica. They walk with short steps, all over the icy continent. However, they don't have "Happy Feet." Some of Antarctica's penguins are endangered, or at risk of dying out. The animals seek for food near the Antarctica's coasts. They use the floating sea ice as a place to rest while they search. In recent years, global warming, the slow rise of Earth's temperature, has been causing the ice to melt. People add to global warming when they drive cars or using electricity. That burns fossil fuels, such as coal, oil and natural gas. The burning of fossil fuel gives off gas that warms the Earth. The harmful gas stays in the atmosphere above Antarctica. The scientists found that the west side of the continent is especially affected by global warming. "Global warming is reducing the amount of food for penguins so that they can't find enough food to eat." Scientist Shaye Wolf said. Experts are hopeful at conditions in Antarctica can be improved. They say people can reduce global warming by using ears and electricity less often. Even kids can help. Wolf suggests, "talk to your friends and family about global warming, how it is harming penguins, and how important it is to stop warming today."

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单选题This is ______ place that I have ever been to in my life.

单选题American life has always had its element of change, of movement, some say of restlessness, and this is still so now. A. 美国人在生活中一直喜变好动，有人说这是不安分守己，这一点至今没有改变。 B. 据有些人说，要到美国生活，就要有变化，喜爱运动，放弃休息，一直不得安宁。 C. 美国人的生活总少不了变化、迁居，如人所说，不安于现状，至今依然如此。 D. 据有些人说，在美国生活有变化，有运动，还有些不安分，直到现在仍然是这样的。 E. 美国人的生活总是具有变化、迁移，有人说不安分守己。这一点至今依然如故。

单选题Psychologists have been studying the changes people experience when they leave rural areas and move into urban environments.A) 心理学家已经研究人们经历上的变化，特别是当他们离开农村进入城市的时候。B) 当心理学家离开农村进入城市的时候，他们研究了人们经历上的变化。C) 心理学家们一直在研究人们在离开农村进入到城市时所经历的变化。D) 心理学家，从农村到城市，一直在研究人们所经历的各种变化。

单选题According to the passage, at what age do most children begin studying at school?

单选题[此试题无题干]

单选题Sandstorms hit northwestern China's Gansu Province and North China's Inner Mongolia Autonomous Region (内蒙古自治区) on the first day of the new century. According to Sun Landong, a meteorologist with the Lanzhou meteorology Observatory, visibility (能见度) was less than 100 meters in Minqin, a Gansu county near Inner Mongolia, because of sand. When visibility drops to less than 1 kilometer, it is called a sandstorm. The sandstorm in Minqin blew up dust in neighboring towns, such as Baiyu, Wuwei, Jichang and Lanzhou, the capital city of Gansu Province. Dust-laden winds also swept into Beijing. Brought by northwest lies blowing at more than 20 meters per second, dust first reached the capital's the temperature down to as low as 8 below zero and many flights put off their planned time from the city's airport. It is quite rare for sandstorms, which are frequent between March and June, to happen in winter, when the earth is frozen. The sandstorms in Gansu and Inner Mongolia do not necessarily mean there will be more of them in the spring than last year, when they were serious, but Beijing is taking it very serious. It is reported that Beijing will spend 6 billion Yuan (US $ 725 million)in preventing sandstorms in the capital and has already set up a special team to make sure what causes them.

单选题The shops are told how many passengers are passing through the airport at a particular time. and where they are going; staff then know how much people are likely to spend and what they will buy. A．他们会告诉商家，某段时间内有多少人经过机场，他们要去哪儿，店员们就会知道他们大概会花多少钱买东西以及他们可能会买什么东西。 B．他们会告诉商家某段时间内出入机场的客流量及他们的去向，商家们就会知道乘客们大概会花多少钱买东西以及他们可能会买什么东西。 C．商家会被告知某段时间内出入机场的客流量以及他们的去向，商家们就会知道乘客们大概会花多少钱买东西以及他们可能会买什么东西。 D．商家会被告知在特殊时期，有多少人经过机场，他们要去哪儿，店员们就会知道他们大概会花多少钱买东西以及他们可能会买什么东西。

单选题Dear Mr. Smith: Thank you very much for your inquiry dated December 12, 2002. I am glad to tell you that we are an outstanding hi-tech company specializing in telephone facilities and are able to offer you our exclusive products (独家产品) , Pentium telephone recorders, at a very reasonable price. A 15 per cent further discount is usually offered for an order for 300 units or more. The recorder can be placed virtually anywhere or even so far from the telephone set that the coming speaker is unaware of its presence. It is completely automatic, started and stopped by electronic controls. Its direct contact with the telephone wire ensures highest fidelity (高保真) recording. The recording volume level is automatically maintained with its built-in ability to boost it when low or to cut it down when high, which is particularly useful in recording long distance calls. This is an unusual opportunity for you to get an unusual product. I am looking forward to receiving your initial order as soon as possible. Yours sincerely, Paul Y. Shen General Manager ABC Company

单选题According to Pro. Salt, plants that take up large amounts of metal in their tissues can be used to ______.

单选题She ______ the offer when it was made. What a pity she missed a golden opportunity! A. shouldn't have turned down B. wouldn't have turned down C. shouldn't turn down D. wouldn't turn down

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单选题Professor Liu ______ for 20 years by the end of next summer.

单选题Doctors are of the opinion that most people cannot live beyond 100 years, but a growing number of scientists believe that the aging process can be controlled. There are more than 12,000 Americans over 100 years old, and their numbers are increasing each year. Dr. James Langley of Chicago claims that, theoretically and under ideal conditions, animals, including man, can live six times longer than their normal period of growth.

单选题On my return to the office this morning after being away for a few days, I found your kind invitation of the 1st October awaiting me, for which I thank you. I should like to have been in a position to accept your invitation, but unfortunately due to a prior engagement with some overseas friends, it will not be possible to do so.

单选题If you desire an interview，I shall be most happy to call in person at any day and time you may appoint.

单选题By the mid-1980s Americans had found themselves at a loss over their fading industrial competitiveness.