单选题：Why are sharks useful for humans?

题目分类：专四
题目类型：单选题
查看权限：VIP

题目内容：

Why are sharks useful for humans? A．Their tasty mea
B．The principle of their defense system against diseas
C．Their solid ski
D．The principle of their birth mode

参考答案：

答案解析：

What does a police-court do?[A] It is charged by a civil off

What does a police-court do?[A] It is charged by a civil officer.[B]It is presid

分类：专四题型：单选题

查看答案

What has Miss Brown ever done which has something to do with

What has Miss Brown ever done which has something to do with tour?A．She worked a

分类：专四题型：单选题

查看答案

UCLA had taken away all Social Security numbers from common

UCLA had taken away all Social Security numbers from common usage to ensure the

分类：专四题型：单选题

查看答案

为提高办事效率，不必每一份文件都经过领导签发。（　　）

分类：专四题型：单选题

查看答案

申诉期间，原机关处理决定（　　）。

申诉期间，原机关处理决定（　　）。A．不再执行 B．继续执行 C．变更执行 D．废止

分类：专四题型：单选题

查看答案