单选题The Antarctica is actually a desert. It is the only continent on the earth without a river or a lake. The Antarctica is all ice all year round. The warmest temperature ever recorded there is zero, at the South Pole. Explorers (控险家) used to think that a place so cold would have a heavy snowfall. But less than ten inches of snow falls each year. That is less than half an inch of water. Ten times that much moisture (水分) falls in parts of the Sahara. The little snow that falls in Antarctica never melts (融化). It continues to pile up deeper year after year and century after century when the snow gets to be about eighty feet deep, it is turned to ice by the weight of snow above it.

单选题When dealing with a ______ task, Alice always asks for help from people around her.

单选题They couldn"t have found the cave ______ they had found a guide.

单选题______you get up late won't be a sufficient excuse for your being late for class. A. When B. That C. Because D. What

单选题Have you ever spent a lot of time ______ for a perfect Christmas present?

单选题Once we get these details in order, we should be ready to present our final report to the president.

单选题A.6:40.B.6:50.C.7:00.D.7:30.

单选题You are no more capable of speaking Spanish than I am.

单选题She is ______ girl that everyone will like her at the first sight. A. such a lovely B. so a lovely C. such lovely a D. how lovely a

单选题______ away from the noise, he was considering ______ to the suburbs of London. A. Being, moving B. To be, moving C. Being, to move D. To be, to move

单选题Her great personal ______ makes her a very popular member of the staff.

单选题The waiter seems to be in a hurry to take our order.

单选题In her spare time she enjoyed ______ novels or ______ to the park.

单选题Broadband technology is seen as the key to the new digital economy. In this rapidly changing world, media and technology information can be sent via phone calls and downloads like music, graphics, business information or films. The simpler the information, the smaller the package and the narrower the bandwidth needed to deliver it. Broadband is used for high speed Internet connections at a fixed monthly rate. It turns an exciting telephone line into a high speed digital line capable of carrying data up to 40 times conventional modern speeds. Any download is available at the click of a mouse-there is no dial-up as there is with standard Interact Service Providers. For home owners and families there are many advantages. One of the most important is simultaneous (同时的) access to both telephone lines and the Internet. No wait and no delay. For businesses, broadband can improve customer relations and provide direct access to corporate e-mails and databases. Entire operations can go online.

单选题How much time do you spend ______ English every day?

单选题She could have done just as well as you,______ the chance.

单选题--The fish were ______yesterday, but they are all died today, why? --Maybe they were lack of oxygen.

单选题______I knew the news, I told you.

单选题I"ve never seen the young man______next to the director.

单选题They planned to ______ the bridge but their bombs failed to explode. A. blow off B. blow up C. blow down D. blow out