—Such a mistake could have been avoided.
—Unfortunately, he _______ the mistake again and again.
| A．repeated | B．would repeat |
| C．had repeated | D．would have repeated |
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If China’s space technology has achieved breakthrough in this field, it really is
amazing wonder.
| A．the; an | B．a; an | C．不填; the | D．a; 不填 |
Though he is in his late sixties, the well-known biolo
gist begins each day ____ a sense of adventure and a sense of curiosity.
| A．in | B．with | C．of | D．at |
The chairman was about to declare the conference open ____ the lights went all out.
| A．as | B．while | C．then | D．when |
--- Oh, you haven’t read my e-mail?
--- Sorry, I haven’t had any ____ to the computer these days.
| A．access | B．attitude | C．attention | D．approach |
importance of being completely honest with friends, and that’s ____ I personally disagree.相关知识点
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