3 . Most people know what it is like to have their blood pressure taken but few understand ________ the numbers that are used to record blood pressure mean.

A．what

B．how

C．which

D．as

4 . It is ________ the fish can survive out of water for months ________ makes them the coolest.

A．where… that

B．when… that

C．that… that

D．what… that

6 . ________, he felt regretful and wanted to resign in spite of all his effort.

A．Having not passed the test	B．Not passed the test
C．His pupils not having passed the test	D．Not his pupils passing the test

7 . The children played in the courtyards and because of the hutongs, courtyards ________ together for miles around ________ a network of people working, playing and living together-a real community.

A．was joined… creating	B．were joined… to create
C．joined… to create	D．joining… created

8 . We also lose heat by transporting the blood to the surface of the skin ________ it can lose heat out into the external environment.

A．when

B．so

C．where

D．unless

9 . He ________ for the unexpected accident causing considerable losses so he cannot but ________ his mistake due to carelessness.

A．was blamed… admit	B．was to blame… admit
C．had been blamed… to admit	D．was to blame… to admit

10 . The new book the publishers looked forward to last season by ________ all means is expected to make a sensation at last.

A．being put out

B．was put out

C．putting out

D．put out