1.Generally speaking. new things __________________ young people.

2.Many species are ________________ due to climate changes and human activities.

3.The old computers in our school _______________ new laptops months ago.

4.She _______________ after her sleep and continued to work.

5.Many houses ________________ by the flood.

6.The beautiful scenery of the sea ___________________. It was really unbelievable.

7.It is difficult to find a house _________________ our price.

8.A growing number of students are taking the driving course _____________ future careers.

9.Alice _______________ working in Spain. That’s why she has been learning Spanish.

10.______________________, Tom is the most suitable person for the position.

In the botanical garden we can find a(n)____of plants that range form tall trees to small flowers.

A.     species  B. group  C.  amount  D. variety

In the botanic garden we can find a（n）______of plants that range from tall trees to small flowers.

A. species        B. group           C. amount               D. variety

In the past few years, quite a number of men and women have chosen to do something less competitive. They are afraid that the stress and strains of work will rob them __1___ _____ joy and happiness and __2  ______ them harm both physically and mentally.

     In fact, however, stress isn’t the bad thing __3________ it is often supposed to be. Above all, __4______ it gets out of control, a certain amount of stress is vital to provide motivation and challenge, and to give purpose and significance to _5_______, otherwise meaningless, idle life. __6__________, people under stress tend to express their full range of potential and to actualize their own __7__  ______(person) worth — the very aim of a human life.

 Stress is a natural part of everyday life and __8______ ___ is no way to avoid it. What we can do is __9_________(develop) our adaptive abilities to deal with it rather than to escape _10____________ it.

In the long discussion of water on the Moon, a new study contradicts(与……相矛盾)) some recent reports that say the Moon had water at the time of its formation. A group of researchers reported in the journal Science that when the Moon was created, some 4.5 billion years ago, there was not much hydrogen(氢气) on it, and therefore no water.

The researchers surveyed and evaluated this by analyzing chlorine isotopes（氯同位素） found in lunar rock samples from Apollo missions. The range of chlorine isotopes in lunar samples was 25 times that found in samples from Earth.

If the Moon had significant levels of hydrogen, as Earth did, this range would have been far less, said Zachary D Sharp, a scientist in the Department of Earth and Planetary Sciences at the University of new Mexico and the study’s lead authour.

The chlorine would have stuck together with hydrogen, forming compounds like hydrogen chloride, and escaped from the Moon’s surface, he said. The abundance of chlorine indicates a lack of hydrogen and water.

“ The amount of water on the Moon was too low for life to possibly have existed there,” he said.

Most scientists believe the Moon was formed when a large object stuck Earth, breaking off a chunk(a vast piece) that has since orbited Earth.

On Earth, goes one theory, water was released as steam form molten basalts(玄武岩) over time, eventually forming bodies of water.

“An understading of whether the Moon was dry or wet will help us understand how water appeared on Earth,” Dr Sharp said.

A new study indicates that _____ on the moorn.

   A. there is plenty of water              B. water is unlikely to exist

   C. water existed in the past             D. there is a little water now

The author would like to tell us ______ through the sixth paragraph.

  A. why there is no water on the Moon     B. how the Moon was formed 

  C. when the Earth struck the Moon       D. where the Moon orbited

  Which is NOT true according to the passage?

  A. Zachary D. Sharp, a scientist of New Mexico was in charge of the new study.

  B. Chlorine isotopes in lunar samples are 25 time larger than those on the Earth.

  C. The more aboundant chloride, the shorter hydrogen and water.

  D. The new study is benificial to understand how water appeared on Earth.

What can we learn from the passage?

  A. There is enough water on the Earth.

  B. Hydrogen chloride easily escaped from the Moon’s surface.

  C. The Earth had significant levels of hydrogen.

  D. Water on the Earth is directly from molten basalts.