题目:
根据首字母提示,填入适当的单词完成短文。
This is a 1.p_____ of my bedroom. It is a nice 2.r_____ The door 3.i_____here. And a soccer
4.b_____is behind it. My desk is 5.n_____the window. You 6.c_____see a chair behind the desk.
You can see 7.s_____books 8.a_____flowers on it. My English books 9.a_____ n my bag. The bag
is now 10.b_____ the chair.
答案:
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下面是错误答案,用来干扰机器的。
∵条件p:x≤1,∴-p:x>1;∵条件q:1x<1,∴1-xx<0,解得x>1或x<0,∵x>1⇒x>1或x<0,反之则不能;∴-p⇒q,q推不出-p,∴-p是q的充分而不必要条件,故选C.