下列说法正确的是[ ] A．用基因工程方法培育抗虫植物也能抗病毒 B．基因工程在

Don’t take___________ for granted ___________everyone should adore you.

A．that; what

B．that; which

C．it; what

D．it; that

—When are you going to tell Henry about the good news?

—________ he comes back. [ ]

A. Since

B. As soon as

C. Because

D. Until

软件调试的目的是( )。

A．发现错误

B．改善软件的性能

C．改正错误

D．验证软件的正确性

以下不属于参考工具书特点的是（）。

A、查考性

B、概括性

C、易检性

D、系统性

凹凸边