It was after he got what he had desired ______ he realized it was not so important.
| A．that | B．when | C．since | D．as |
第二部分：知识运用（共两节，45分）
第一节单项填空（共15小题；每小题1分，共15分）
从每题所给的A、B、C、D四个选项中，选出可以填人空白处的最佳选项，并在答题卡上将该项涂黑。
Our teacher asked us to use______Internet as______resource when we work on our essays·
A．不填；a B．不填；the C．the ; a D．the ; 不填
______more information ,write to the address below.
| A．To | B．On | C．From | D．For |
If you______the right map , we wouldn’t have got lost.
| A．have bought | B．bought | C．had bought | D．would buy |
—Which umbrella can I take?
—You can take______of them; I will use none.
| A．both | B．any | C．either | D．each |
Living in the desert involves a lot of problems，______water shortage is the worst.
| A．of which | B．when | C．of whose | D．Which |