_______________[A] allowed [B] preached [C] granted [D] funded

Pre－s Ag存在于_________表面，分为_________、_________两种抗原。

In an operating diesel engine, pre-ignition can be caused by _____________.A.excessively l

在HTML中，＜pre＞是表示______。 A．标题标记 B．预排版标记 C．转行标记 D．文字效果标记

61._________A. preventB. preserveC. presumeD. pre

61._________A.. taughtB. believedC. triedD. allow

_________(61)A.prevent B.preserve C.presume D.pre