[单项选择]I’m afraid it （　） tomorrow, but who knows
A. may have rained
B. might rain
C. would rain
D. ought to rain

[单项选择]I’m afraid it ______ tomorrow, but who knows
A. may have rained
B. might rain
C. would rain
D. ought to rain

[单项选择]—I can not repair these until tomorrow, I’m afraid.
—That’s OK, there’s ______.
A. no problem
B. no wonder
C. no doubt
D. no hurry

[单项选择]Ian: Tomorrow is my big exam. I’m afraid I’ll fail.
Andrew: Don’t worry. You have studied very hard. You have done your best. I think if you calm down, you will do well in the exam.
Ian: You’re right. I’ve prepared the best I can. Thanks for your encouragement.
Andrew: ______
A. That’s not too bad.
B. I’d rather you didn’t.
C. Come on, let’s take a break.
D. It’s a snap.

[单项选择]No one really knows who composed this piece of music, but it has been （　） to Bach.
A. identified
B. associated
C. referred
D. attributed

[填空题]No one knows who the father of the World Wide Web is, except Berners-lee himself.

[填空题]When you are back home, the computer knows who you are.

[填空题]

[听力原文]11-15
Nobody knows who first invented the umbrella, but it was used in very ancient times. Probably the first to use it were Chinese, in the eleventh century B. C.. We know that the umbrella was used in ancient Egypt and Babylon as a sunshade. And there was a strange thing connected with its use: it became a sign of honor. In the Far East in ancient times, the umbrella was allowed to be used only by those in high office.
In Europe, the Greeks were the first to use the umbrella as a sunshade. And the umbrella was in common use in ancient Greece. But it is believed that the first people in Europe to use the umbrella as protection against the rain were the ancient Romans.
By the eighteenth century, the umbrella was used against rain throughout most Europe. Umbrellas have not changed much in style during all this time, though they have become much lighter in weight. It wasn’t until the twentieth century that women’s umbrellas began to be made