() 1.About ______ of the Earth ______ covered with water.
A. three-fourths；is
B. three-fourth；is
C. third-fourths；are
D. three-fourths；are

A

分数表达中，分子用基数词，分母用序数词，分子大于1时分母加s，故“四分之三”为three-fourths；“分数+of+名词”作主语时，谓语动词与名词一致，Earth为单数，be动词用is。

() 2.Many tourists prefer five-star hotels because they think expensive hotels always ______ guests with better service.
A. prevent
B. protect
C. present
D. provide

D

根据语境“许多游客喜欢五星级酒店，因为他们认为昂贵的酒店总是给客人______更好的服务”，结合选项，A.prevent（阻止）、B.protect（保护）、C.present（呈现）均不符合“提供服务”的搭配，D.provide有“提供”的意思，且“provide sb. with sth.”是固定搭配，意为“给某人提供某物”，符合题意。

() 3.China is getting better at making hi-tech products ______ can be bought in all parts of the world.
A. who
B. which
C. what
D. where

B

本题主要考查定语从句的关系词。题干大意是“中国在制造高科技产品方面做得越来越好，在世界的每个角落都能买到这些产品。”分析句子结构可知，“... can be bought in all parts of the world”是定语从句，修饰先行词“hi-tech products”，且从句中缺少主语，所以应该用关系代词。选项A“who”指人，不符合题意；选项B“which”指物，在定语从句中可作主语或宾语，符合题意；选项C“what”不能引导定语从句，不符合题意；选项D“where”在定语从句中作地点状语，不符合题意。

() 4.—What's the most popular form of ______ in this city?
—It's hard to say. Maybe it's going to the movies.
A. environment
B. experience
C. experiment
D. entertainment

D

本题可根据各选项的含义，结合对话语境来判断正确答案。
选项A：“environment”意为“环境”，如自然环境、社会环境等，与对话中提到的“going to the movies（去看电影）”这种活动不相关，所以该选项不符合语境。
选项B：“experience”意为“经历；经验”，通常指个人亲身经历过的事情或所具备的知识和技能，与看电影这种娱乐活动没有直接联系，因此该选项也不正确。
选项C：“experiment”意为“实验”，一般是在科学研究中进行的尝试或测试，和看电影这种休闲娱乐活动毫无关联，所以该选项不合适。
选项D：“entertainment”意为“娱乐”，看电影是一种常见的娱乐形式，符合对话中“the most popular form of...（最受欢迎的……形式）”以及回答“Maybe it's going to the movies（也许是去看电影）”的语境。

() 5.Nowadays, more and more people prefer ______ in the countryside ______ the fresh air.
A. live；to breathe
B. living；to breathing
C. to live；to breathing
D. to live；to breathe

B

prefer doing sth. to doing sth. 是固定搭配，意为“比起做某事更喜欢做某事”。第一空用 living，第二空用 to breathing，符合搭配要求。

三、阅读填空
One of the most common questions that scientists find themselves asking is "Is there life on other planets?". Since the first famous UFO sighting in 1947, the i 1 of life on another planet has been debated(争论) almost non-stop. The subject has been used in many TV programmes, such as The X-Files, and also in many films which include Mars Attacks and Men in Black. Scientists have c 2 up with many new ideas and ways of trying to e 3 prove or disprove the existence(存在) of life elsewhere.
Mars is a very s 4 planet to the Earth in relation to size and atmosphere. So it seems like the most probable planet to search for life. At the end of the 19th century, an American named Percival Lowell built himself an observatory(观测站) so that it was possible for him to study Mars. L 5 through his telescope, Lowell became sure that he could see a network of man-made rivers. This l 6 him to believe that there were living beings on Mars who had dug these rivers.
However, spacecraft have now visited Mars and found that there is no s 7 of water at all. It is now thought that the lines he could see were the mixture of Lowell's wild imagination and scratches(划痕) on the lens of his telescope.
We are now searching one of Jupiter's moons, Europa, as this seems to be the next possible place to hold life. It may be p 8 for us to get material from another planet or moon or star from elsewhere in the solar system. Spacecraft may be able to land on these bodies and, for example, use a robot to c 9 rocks for research.
Although humans have a 10 a lot in space technology, it is certain that there is still a long way to go in the course of space exploration.
1. 2. 3. 4. 5.
6. 7. 8. 9. 10.

1. idea 2. come 3. either 4. similar 5. Looking 6. led 7. sign 8. possible 9. collect 10. achieved

1. 根据“the i...of life”及首字母i，填idea（想法）；2. “come up with”固定短语，填come（想出）；3. “either...or...”固定搭配，填either（要么）；4. “be similar to”固定短语，填similar（相似的）；5. 现在分词作状语，“Looking through”，填Looking（看）；6. “lead sb. to do sth.”过去式，填led（导致）；7. “no sign of”表示“无...迹象”，填sign（迹象）；8. “it is possible for sb. to do sth.”，填possible（可能的）；9. “use a robot to collect rocks”，填collect（收集）；10. “have achieved a lot”表示“取得很多成就”，填achieved（取得）。