Leave your key with a neighbor _____you lock yourself out one day.
| A．ever since | B．even if |
| C．soon after | D．in case |
.It is definite that new digital mobile phones have less radiation, but that does not________mean that they should be used without caution.
| A．obviously | B．necessarily | C．generally | D．eventually |
.____________the advantages against the disadvantages, I decided to take up the job as a clerk in the bank.
| A．To weigh | B．Weighing | C．Weighed | D．Having weighed |
The previous lecture focused on the reading problems in new words, while this lecture will turn to___________in complex sentence structures.
| A．that | B．one | C．those | D．ones |
.Being exposed for a long time_____strong sunlight might seriously damage your skin.
| A．in | B．under | C．to | D．over |
.It' s quite a time ______Yao Ming got injured, but it won' t be long________he returns to
the court.
| A．since;before | B．after; when | C．before;since | D．that; when |