Ⅰ.单句填空
1.When you send a (digital) signed message you are sending your certificate and public key.
答案digitally
2.In addition to these (tradition) activities,we have a wider range of choices.
答案traditional
3.The environment will be improved by our (far) efforts to reduce pollution.
答案further
4.Scientists can (identity) trends for the future,but accurate predictions are almost impossible.
答案identify
5.It is difficult to make a (compare) with her previous book because they are completely different.
答案comparison
6.In contrast my previous impression,the atmosphere here is not tense at all.
答案with/to
7.The (image) of the moon’s surface were transmitted back to earth and printed out.
答案images
8.Last week we visited the British Museum,which attracted tourists from all the world.
答案over
