II.单项填空(共15小题;每小题1分,满分15分)
从每题所给的A、B、C和D四个选项中,选出可以填入空白处的最佳选项,并在答题卡上将该项涂黑。
21.It is ___ great honour for China to have launched ____ manned spacecraft ShenZhou-7 successfully. A great celebration was held in ___ honour of the event.
A.a, a, a B.a, the, / C./, the, / D.a, the, a
22.After eggs were found containing toxic chemical melamine(三聚氰胺) , the price of which is discounted ________ it was before.
A.half as many as B.as half as many
C.as half much as D.half as much as
23.He made too many mistakes in the exam.To ______ it another way, he failed to pass the examination.
A.put B.place C.set D.speak