Self－confidence can be cultivated by______.
A. self-improvement
B. knowing yourself
C. self-reliance
D. self-discipline
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We must __________ the rivers which overflow annually Otherwise floods will frequently strike the areas along the rivers.
A. harness
B. make use of
C. take advantage of
D. utilize
Which descriptions below are true about Stephen Hawking？（)
A. theoretical physicist
British mathematician
C. born in Oxford
D. author of best seller
Why should we study science？（)
A. to keep us curious
B. to know the world better
C. to think critically
D. to work better
What is true about clone？（)
A. It would be a completely new way of making a human being
B. It, biologically, refers to any organism whose genetic information is identical to that of its parent organism from which it is created
Cloning will create a baby from a single cell, from a single person
D. It is favored widely
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