单选题Neither John (or) his father (was) able (to wake up) early enough to (catch) the morning train. A. B. asleep C. to wake up D. catch

单选题Speaker A: Here are our tickets and passports. We"re flying to Amsterdam today. Speaker B: Welcome to Youth. Let"s see...yes, your passports are still valid and your tickets are in order. 1 Speaker A: Just these two. Speaker B: Please put them on the scales. Any carry-on baggage? Speaker A: Yes, two pieces. Oh, and this camera. Speaker B: It"s better to put these identification tags on them. 2 Speaker A: Non-smoking, please. And could we have one window seat, please? Speaker B: Let me see. Oh, 3 All right. You"re all set. I"ve stapled your two baggage claim stubs to your return tickets. Speaker A: These two? Speaker B: Yes. And here are your boarding passes. You have seats 20A and 20B. Your flight is on time, and it"s leaving from Gate 12. Don"t forget to pay the airport tax before you board. 4 Speaker A: Thanks a lot. A.Do you want smoking or non-smoking seats?B.Have a pleasant flight.C.How many pieces do you want to check in?D.here are two left.

单选题Tom and John seldom go to the library in the evening, ______?

单选题How can we get rid of garbage? Do we have enough energy sources to meet our future energy needs? These are two important questions that many people are asking today. Some people think that man might be able to solve both problems at the same time. They suggest using garbage as an energy source. For a long time people buried garbage or dumped it on empty land. Now, empty land is scarce. But more and more garbage is produced each year. However, garbage can be a good fuel to use. The things in garbage do not look like coal, petroleum, or natural gas; but they are chemically similar to these fossil fuels. As we use up our fossil--fuel supplies, we might be able to use garbage as an energy source. Burning garbage is not a new idea. Some cities in Europe and the United States have been burning garbage for years. The heat that is produced by burning garbage is used to boil water. The steam that is produced is used to make electricity or to heat nearby buildings. In Paris, France, some power plants burn almost 2 million metric tons of the city's garbage each year. The amount of energy produced is about the same as would be produced by burning almost a half million barrels of oil. But there are problems in using garbage as a fuel. Garbage that bums easily, such as food scraps and paper, must be separated from metals, glass, and other materials that do not burn easily. This separation process is normally costly. (79)Another problem is that burning garbage can pollute the air. Our fossil fuel supplies are limited. Burning garbage might be one kind of energy source that we can use to help meet our energy needs. (80) This method could also reduce the amount of garbage piling up on the earth.

单选题Unfortunately, ______ of the movie stars she hoped to see were present at the press conference. A. nobody B. nothing C. none D. no one

单选题It is high time that the international community ______ together to fight against terrorism.

单选题This new instrument is far superior ______ the old one we bought three years ago.

单选题I couldn't understand why he pretended ______ in the bookstroe.

单选题Speaker A: Billy, have you heard the latest news? It appears that we won't be laid off(解雇)after all. Speaker B: ______

完形填空Researchers in Britain are telling schools that children should be doing more learning outdoors

完形填空If you feel you have a closer relationship with your grandmother on your mothers side than on your fathers side, it is no surprise to researchers at the universities of Newcastle and Antwerp

完形填空Long-distance runners may at times worry about their heart health while taking part in the events

完形填空During a trio to observe wild animals in Africa Iencountered the least brave animal on earth the wildebeest(角马)