8.The salt concentration in the liquid water of Lake Vida _____.
A. is found to be a great deal higher than that of seawater
B. was of little scientific value
C. may be older than that collected below 39 feet of ice
D. might have come from Mars
E. is to collect some briny lake water for analysis
F. may return to life sooner than microbes frozen in the surface ice
5. Signing the FCTC is only the first step toward__________.
6. Countries that ratify the FCTC will have to, among other things__________.
7. It is hoped that the FCTC will greatly help to reduce deaths__________.
8. Much more countries have signed the FCTC that those that__________.
A. have ratified it
B. approving it
C. implement its provisions
D. restrict smoking in public places
E. caused by tobacco use
F. including higher tobacco taxes
答案:EAFD BCEA
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