A long lead-in is always more effective than a short one.

There are two extremes in music, both of which can ________ risks.

A leadin

B bringin

C contributein

D resultin

The girl married Mr. Cook because ______ .

A．he was rich too

B．he had a few servants

C．he always listened

D．he was a famous actor

A.=2/5

B.≤2/5

C.≥2/5

D.＜2/5

A. pronunciation

B. speaking

C. production

D. articulation

The reason for believing that future man will be different is that he_______.

A is always

B hopes for a change

C never stops changing

D will live a different life

A.=2／5

B.﹤2／5

C.≤2／5

D.≥2／5

在2×2×2的赫克歇尔-俄林模型中，假设衣服(C)与小麦(w)分别是劳动与土地密集型的产品。已知a_LC/a_LW=5/2，则必有a_FC/a_FW＜2/5。( )

听力原文：M: I'm exhausted from the shopping. I had to fight through the crowds.

W: It's always terrible around Christmas. It's like a continual rush hour.

What time is the conversation taking place？

A．Christmas.

B．Rush hour.

C．In the morning.

D．Spring.

Asia _______________ by most experts to be the cradle of human civilization.

A.has been always considered

B.has always been considered

C.always has been considered

D.has been considered always

A.B＞10

B.B＜10

C.B＜5

D.B＜20

听力原文：W: John, have you finished the research paper for anthropology？

M: Not yet. I always seem to put things off until the last minute.

What does the man mean？

A．He wrote the assignment last semester.

B．He'll finish it in a few minutes.

C．He's used to working under pressure.

D．He isn't going to write it at all.