1. Don’t tell me such things _______ you are not certain.

　　A. that B. which C. those D. as

　　2. _______ a microscope we can see different kinds of things that are unable to be seen by our naked eyes.

　　A. In terms of B. In place of C. By means of D. By far

　　3. Jackson went to work ______ his illness.

　　A. besides B. even though C. in spite of D. although

　　4. Anybody will do, _______ he is responsible for that.

　　A. as far as B. so far as C. as long as D. as soon as

         BCDC

　　1._______ ! There's a train coming.

　　A. Look out

　　B. Look around

　　C. Look forward

　　D. Look on

　　2.The accident is reported to have occurred _______ the first Sunday in February.

　　A. at

　　B. on

　　C. in

　　D. to

　　3.-Do you remember _______ he came?

　　-Yes， I do. He came by car.

　　A. how

　　B. when

　　C. that

　　D. if

　　4.Smith was reluctant to tell the schoolmaster _______ he had done the day before.

　　A. that

　　B. how

　　C. where

　　D. what

　　5.He will have learned English for eight years by the time he ______ from the university next year.

　　A. will graduate

　　B. will have graduated

　　C. graduates

　　D. is to graduate

         DDCBA