题目内容

设=cos4x，则dy=

A. 4sin4xdx
B. -4sin4xdx
C. (1/4)sin4xdx
D. -(1/4)sin4xdx

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听力原文：M: Gloria, are you going to send out invitations to the dance？
W: No. I got Dan to do it.
Q: What did Gloria say about the invitations？
(16)

A. Dan has got them.
B. Dan took care of them.
C. Gloria forgot about them.
D. Gloria has sent them out.

The petrol-based bags, though harmless to the environment, cost too much in manufacture to

A. Y
B. N
C. NG

In South Africa, short-lasting low-cost thin plastics bags are banned from production.

A. Y
B. N
C. NG

属于颞骨的结构是（）E．