读图及有关材料，回答下列问题： 材料一 中国南方的崇山峻岭间，将建成世界上第一条电力“超级高速公路”——“云粤直流工程”，这将大大提
The day breaks，______ the birds are singing. A. because B. as C. since D. for
________, what he has said _______ to be _______ as we haven’t investigated the site yet. A. Obviously; remains; proved `B. Fundamentally; is remained; balanced C. Traditionally;
He has moved to another city, but we write to each other . A. day by day B. arm in arm C. side by side D. from time to time
Do you think that living a hungry life is last century’s story? Well, it may be this century’s headline. The world has growing worries about a global food shortage. Right now, there are still 8
已知是三个不同的平面，命题“∥且”是真命题，如果把中的任意两个换成直线，另一个保持不变，在所得的所有新命题中，真命题有（ ） A. 0
12. — I haven't seen Mr. White for weeks. — What _____ to him? A. must have happened B. may have happened C. can have happened D. m
_______ you are alone at home, why don’t you go with us to the party? A Even though B As though C So that D Now that
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