投资目标是指投资者在承担一定风险的前提下期望获得的投资收益率。（）
参考答案：对
解析：熟悉证券组合管理的意义、特点、基本步骤。
下列参与三羧酸循环的酶中，属于调节酶的是
A．延胡索酸酶
B．琥珀酰CoA合成酶
C．苹果酸脱氢酶
D．柠檬酸合酶
用括号内所给单词的适当形式填空。（5分）
1. He shows great interest in _________ (chat) with his classmates by QQ.
2. I prefer _________ (music) who play many different kinds of songs.
3. If I had a million dollars, I’d give it to _________ (medicine) research.
4. John _________ (drop) his wallet on the ground while walking on the road.
5. Please speak ___________ (clear), or others can’t catch what you mean.
