So whether life will continue on the earth for millions of years to come will depend on _____________. （solve）

因此在未来的数百万年中，生命能否在地球上延续取决于这个问题能否得到解决。

The earth is a special planet in the solar system. The explosion of the earth produced carbon, nitrogen, vapor and other gases,    【小题1】   (make) the earth’s atmosphere. What is even more important is _【小题2】  as the earth cooled, water which is fundamental to the  【小题3】  （develop） of life appeared and stayed on the surface. The continued presence of water allowed the earth to dissolve     【小题4】  (harm) gases into the oceans and this produced a chain reaction which made it possible for life to develop.
Many millions of years later, the _【小题5】  （arrive） of small plants encouraged the development of early shellfish    【小题6】   all sorts of fish. Then, with the first green plants appearing on land, land animals appeared and dinosaurs developed and existed on the earth for millions of years. Then Dinosaurs’ sudden disappearance made the rise of mammals possible on the earth. They were different from all life forms   【小题7】   ever existed in the past because they produced young from within their bodies. Finally, some small clever animals with hands and legs ___【小题8】___(appear) and spread all over the earth. Thus they, in their turn, have become    【小题9】   most important animals. However, they are putting too much carbon dioxide into the atmosphere. So for millions of years to come,    【小题10】   life will continue on the earth will depend on whether the present problem can be solved.

The earth is a special planet in the solar system. The explosion of the earth produced carbon, nitrogen, vapor and other gases,    1.   (make) the earth’s atmosphere. What is even more important is _2.  as the earth cooled, water which is fundamental to the  3.  （develop） of life appeared and stayed on the surface. The continued presence of water allowed the earth to dissolve     4.  (harm) gases into the oceans and this produced a chain reaction which made it possible for life to develop.

Many millions of years later, the _5.  （arrive） of small plants encouraged the development of early shellfish    6.   all sorts of fish. Then, with the first green plants appearing on land, land animals appeared and dinosaurs developed and existed on the earth for millions of years. Then Dinosaurs’ sudden disappearance made the rise of mammals possible on the earth. They were different from all life forms   7.   ever existed in the past because they produced young from within their bodies. Finally, some small clever animals with hands and legs ___8.___(appear) and spread all over the earth. Thus they, in their turn, have become    9.   most important animals. However, they are putting too much carbon dioxide into the atmosphere. So for millions of years to come,    10.   life will continue on the earth will depend on whether the present problem can be solved.

第三部分：语法填空（共两节，满分20分，每小题1分）

根据文段内容或提示，填写正确的单词，每空只能填写一个单词。

No one knows exactly __31___ the earth began, as it happened so long ago. However, according to a __32___ (wide) accepted theory, the universe began ___33___ a “Big Bang” that threw matter in all directions…..What it was to become was __34___(certain) until between 4.5 and 3.8 billion years ago __35___ the dust settled into a solid globe. The earth became so violent __36___ it was not clear whether the shape would last or not…….People are__37__ (put) too much carbon dioxide into the atmosphere, which prevents heat from __38____(escape) from the earth into space. As a result of this, many scientists believe the earth may become too hot to live on. So __39____life will continue on the earth for millions of years to come will depend on whether this problem can be __40___(solve).

第三部分：语法填空（共两节，满分20分，每小题1分）

根据文段内容或提示，填写正确的单词，每空只能填写一个单词。

A

No one knows exactly __31___ the earth began, as it happened so long ago. However, according to a __32___ (wide) accepted theory, the universe began ___33___ a “Big Bang” that threw matter in all directions…..What it was to become was __34___(certain) until between 4.5 and 3.8 billion years ago __35___ the dust settled into a solid globe. The earth became so violent __36___ it was not clear whether the shape would last or not…….People are__37__ (put) too much carbon dioxide into the atmosphere, which prevents heat from __38____(escape) from the earth into space. As a result of this, many scientists believe the earth may become too hot to live on. So __39____life will continue on the earth for millions of years to come will depend on whether this problem can be __40___(solve).