【C18】A．illegalB．oddC．vainD．wrong

It can be inferred from the passage that______.A．killing foxes with poison is illegalB．lim

A．illegalB．identicalC．differentD．profound

He attempted _______ to set up a company of his own.A. with vainB. on vainC. in vainD.

【C13】A．uniqueB．oddC．smallD．rare

The expression "to take the rap" ______.A．refers to something wrong or illegalB．was used s

下列物质中 ( )是目前已经肯定的必需脂肪酸。A C16:2B C18:2C C18:3D C20:3(E)C20:4