____herself wondering whether she had made a mistake, she felt embarrassed and at a loss.

A.Catching  B.Caught  C.Being caught  D.Having been caught

— How do you find your trip to the Great Wall?

— We had an awful time! ______, George got sick the day we arrived.

A. on the other hand    B. to begin with   C. as a consequence   D. on the contrary

As to his criticism, I don’t mind it in the least, but______is how he does it that I can’t take.

  A. which    B. that    C. this   D. it

In this composition spelling mistakes ______ while grammatical ones are not so obvious.

A. stick out         B. stick  to        C. stick up      D. stick around

There are many old trees in our school, each ________ about 100 years ago.

A. dates back to     B. dating from

C. dated back        D. which dated to

There he pointed to _____ looked like a stone and said that’s ______ you had to carry home.

A. that, that        B. what, what

C. which, what       D. as, which

The students _______ busily when Miss Brown went to get a book she _______ in the office.　

A. had written, left　        B. were writing, has left

C. had written, had left　      D. were writing, had left

I didn’t see her in the meeting room this morning. She ______ have spoken at the meeting.

A. mustn’t      B. shouldn’t

C. needn’t      D. couldn’t

A desert is a beautiful land of silence and space. The sun shines, the wind blows, and time and space seem endless. Nothing is soft. The sand and rocks are hard, and many of the plants even have hard needles instead of leaves.

The size and location(分布) of the world’s deserts are always changing. Over millions of years, as climates change and mountains rise, new dry and wet areas develop. But within the last 100 yeas, deserts have been growing at a frightening speed. This is partly because of natural changes, but the greatest makers are humans.

Humans can make deserts, but humans can also prevent their growth. Algeria Mauritania is planting a similar wall around Nouakchott, the capital. Iran puts a thin covering of petroleum(石油) on sandy areas and plants trees. The oil keeps the water and small trees in the land, and men on motorcycles(摩托車) keep the sheep and goats away. The USSR and India are building long canals to bring water to desert areas.

In this passage, “needles” refers to _______.

A. small, thin pieces of steel.

B. long, thin pieces of branches.

C. small pointed growth on the stem(莖) of a plant.

D. small, thin pieces of sticks.

Which of the following is NOT true?

A. The greatest desert makers are humans.

B. There aren’t any living things in the deserts.

C. Deserts have been growing quickly.

D. The size of the deserts is always changing.

People in some countries are fighting a battle against _______.

A. the growth of deserts B. the disappearance of desert plants

C. natural changes  D. congenital climate

We can guess that Mauritania and Algeria belong to _______.

A. Asian countries 　　　　       B. American countries

C. European counties　　　 D. African countries

Choose the sentence which best gives the main idea of the passage.

A. The deserts of the world are always changing.

B. Man is to take measures to control the growth of the world’s deserts.

C. Deserts are lands of silence and space.

D. Deserts have grown at a fast pace in the past 10 years.

—How pretty the girl’s handwriting is!

—I couldn’t agree more.In fact,I doubt whether there is ______one in our class!

A.a good                            B.a better 

C.the better                          D.the best