[单项选择]______you’re early you can’t be sure of getting a seat.
A. If
B. Unless
C. When
D. Because

[单项选择]_____you’’ re early you can’’t be sure of getting a seat.
A. If
B. Unless
C. When
D. Because

[填空题]I’m sure you can ______ (find) what you want in our shop.

[单项选择]I’m sure you can’t carry all that ______. Let me give you a hand.
A. for yourself
B. of yourself
C. in yourself
D. to yourself

[单项选择]Host: Are you sure you’’re leaving now It’’s so early. Guest:______
A. Yes, I must. I have an assignment due tomorrow morning.
B. I’m afraid so. Thank you for your wonderful cooking.
C. I don’t want to, but I have to.
D. I think it’s, already very late now.

[单项选择]One sure way you can tell how quickly a new idea, for example, the idea of "privatization," is taking hold among the population is to monitor how fast the word or words expressing that particular idea are passing into common usage. Professional opinions of whether or not words can indeed be said to have passed into common usage are available from dictionary editors, who are vitally concerned with this question. The method described above for determining how quickly a new idea is taking hold relies on which one of the following assumptions
A. Dictionary editors are not professionally interested in words that are only rarely used.
B. Dictionary editors have exact numerical criteria for telling when a word has passed into common usage.
C. For a new idea to take hold, dictionary editors have to include the relevant word or words in their dictionaries.
D. As a word passes into common usage, its meaning does not undergo any severe distortions in the process.
E. (E) Words denoting new ideas tend to be used before the ideas denoted are understood.

[简答题]