[单项选择]All the pupils seem to be very {{U}}cheerful{{/U}}.
A. happy
B. healthy
C. naughty
D. busy

[单项选择]All the pupils seem to be very {{U}}cheerful. {{/U}}
A. happy
B. healthy
C. naughty
D. busy

[单项选择]— Tom and Tina don’t seem very happy recently. — Haven’t you heard She’s _____ their engagement.
A. broken down
B. broken off
C. broken out
D. broken away

[单项选择]

[听力原文]
W: What is the matter, Jack You seem very disappointed.
M: I knew just now that I didn’t pass the last math test.

Why is Jack disappointed（）
A. Because he was late.
B. Because he didn’t pass the English test.
C. Because he didn’t pass the math test.
D. Because his math teacher criticized him seriously.

[单项选择]

W: You seem very tired recently.
M: It’s my new course. My teacher is very strict with me. What’s more, there are many assignments every day. I spend most of my time on them.

Why is the man tired（　）.
A. He is too weak to do his homework.
B. He is too busy with his studies.
C. He spends too much time on ball games.

[简答题]We all know talented people who never seem to reach their potential. These people often have great early success, then seem to fade into averages. Those who lack persistence start out with the best intentions, but they eventually drift. This trait is quite characteristic, for example, of people who are constantly changing careers. They become enthusiastic about their new job and feed off this momentum for a while to perform well. But when this newness wears off and they realize they aren’t incredibly committed to sticking with that job in the long term, their success begins to wane and they start to fail.

[填空题]All the cancers do seem to cluster in families, at least to some degree.

[简答题]

All U. S. nuclear weapons production facilities are presently closed down, and if the various agreements are adhered to, those facilities will never be required except for one critical capability. All modern nuclear weapons use uranium (铀), plutonium (钚), and tritium (氚). Uranium and plutonium have very long half-lives, and there is large surplus of these materials.
Tritium, however, has a relatively short half-life of about 12.6 years, so about 5 percent of the amount on hand must be replaced each year to maintain the current inventory. (46) Because of the large retirement of nuclear weapons by the United States in compliance with early agreements and national policy, tritium from retired weapons has been used to make up that lost through natural decay. (47) However, in about 10 to 15 years, depending on future negotiations, the United States will need a guaranteed supply of tritium to maintain its stockpile at whatever level is agreed on.
In anticipation