问题

I want to ________ the secrets of natureand apply them for the happiness of man

A:Don't worry
B:Forget it
C:Don't say so
D:Don't mention it

正确答案是：

同类题型

_____ is no doubt ______ you have to remain seated and fasten your seatbelt before the plane lands.

I catch a cold, I have pain in myback.

If you have got _____temperature withoutcoughing, perhaps you have caught _____cold. Just stay in _____bed. Don’t thinkthat you have got SARS

She is the only one among the _______ writers who ______ stories for children.

1Do they like _______