3 . 他经常在长城上给外国游客当志愿者,这不仅丰富了他的经历,又让他有机会与英语为母语的人交流。 ( frequently, native, volunteer) （汉译英）

4 . Like anything, it is possible to have too much of both,________is not good for the health. (用适当的关系词填空)

5 . 阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

Language is sometimes written as a code so that people can communicate secrets. During     1     Second World War, the German Navy （海军）used a code to send messages. The British broke the code and     2     （learn） about many German plans. The Japanese also used a code to talk to     3     （they） ships at sea. It was called the Purple Code. Although the Americans soon broke this code, the Japanese didn’t know it     4    （break）. In 1942 , the Americans began to use their own code to send     5     （secret）. A few Navajo（纳瓦在人）Indians made this code     6    （base） on their language, which only some American Indians spoke. The code described a few things the American army did. Only they could understand this code, so they went with the army as it fought against the Japanese. These Navajo soldiers promised     7    （keep） this code a secret, even though this could cause their     8    （die）. The Japanese never broke the code because they knew nothing     9     the Navajo language. And the code,     10     connected two languages, helped win the war in the Pacific.

6 . 阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确式。

Last week,our yearly school sports meeting     1    (hold) and the students of our class took     2    active part in it.On the first day,we watched the impressive opening ceremony    3    (perform) by energetic teachers and students.Soon,the games formally began.Some of my classmates ran to the track to cheer for the     4    （athlete）while others remained    5    (seat),watching them from a distance.I was     6    (excite) because I would compete     7     the 100-meter dash with my classmates cheering.Unfortunately,I fell on the ground,     8     (miss) the chance to win.What a pity!Although I failed,I was still looking forward to a     9     (good) performance the next day.However,as a result of the rain,we had to put off the sports meeting,     10    made us disappointed.

7 . By serving others, a person focuses on someone other than himself or herself, ________ can be very eye-opening and rewarding.

A．who	B．which
C．what	D．that

8 . 【2018·北京】She and her family bicycle to work, _________ helps them keep fit.

A．which	B．who
C．as	D．that

9 . Easy Ways to Build Vocabulary

It's not all that hard to build an advanced and large vocabulary. Like many things in life, it's     1    ongoing process, and the best part of the process is that there's enough room for improvement,     2    means you'll just keep getting better and better. Of course you have to work at it. You wouldn't think that a few     3    (month) of exercise in your teens would be enough     4     the rest of your life, and that's also true for building your vocabulary--you have to keep at it daily, and pretty soon you will find that you have an excellent vocabulary.

One of the     5    (effect) ways to build vocabulary is to read good books. You need to     6    (real) read at least one good book a week, preferably a classic. This isn't as hard as it     7    (sound), and it is far better than any other method because you improve your vocabulary while     8    (read) an interesting piece of literature. Another nice thing is that you learn both new words and     9    (they) use unconsciously, meaning that you will tend to use the words     10    (learn) this way in conversations almost automatically.

10 . Recently I bought an ancient Chinese vase, ________ was very reasonable.

A．which price	B．the price of which
C．its price	D．the price of whose