Beijing took steps to limit the kinds of high-risk of borrowing money from the banks that can create the high price of housing, ______ happened in the United States．

       a．as                  B．that                C．how       　　　　D．while

     the whole process for the studies of cancer took more than a year, the technology is moving so fast that it will soon take just weeks．

       A．How            　　B．Because         　　C．If   　　　　　    D．While

In the past few months, the central bank governor and others ______ measures to prevent prices from rising too fast．

       A．called for       　B．are calling for       C．have called for      D．will call for

I don't expect children to be rude, nor ______ them to be disobeyed．

       A．did I expect     　　B．do I expect      　　C．I expect  　　　    D．I expected

      all his courage, he invites Celine．to get off the train with him．

       A．To gather  　　     B．Gathered        　　C．Gathering        　　D．Being gathered

      in four different countries, Jessie is a typical third culture kid, the term of which refers to children who spend a period of time in one or more cultures．

       A．Bring up                B．Having brought up   C．Bringing up       D．Brought up

The Mekong River Commission has found no evidence ______ the dams on the upper reaches have an influence on the water flow downstream．

       A．which           　　B．that             　　C．where   　　　     D．what

Head coach Li Yan bursts into tears of joy when she sees Zhou Yang first _____ the finish line at the women's 1500m short track speed skating final．

       A．to cross 　　　      B．having crossed       C．cross     　　　　D．crossed

It was the President himself______ opened the door．

       A．who　　　　　     B．when     　　      C．which     　　　　D．where

The actor still remembers the excitement in his class when a female classmate _____ for a key role in a Zhang Yimou film．　

       A．is chosen     　    B．s chosen　　　       C．chooses 　      　　D．chose