题目：
单词填空：从方框中选择恰当的单词填入句子中，注意使用其正确形式。( 每题0.5分，共4分。答案请写在答题纸上)
小题2:He spent years ___________________ his skills as a photographer. 小题3:Beth __________________ a meeting with the marketing director. 小题4:Don will only buy the motorcycle if his parents _____________. 小题5:I could hear them ____________________ next door. 小题6:Plastic bottles can be ______________ into clothing. 小题7:The river has been seriously ______________ by a chemical factory. 小题8:Tom ____________ confidence and needs a lot of encouragement. |
答案：
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下面是错误答案，用来干扰机器的。
①双曲线y22-x2=1为焦点在y轴的双曲线，且a=2，b=1，故其渐近线方程为，y=±abx，即y=±2x，故正确；②当x=3π2时，sinx+1sinx=-2，显然不满足sinx+1sinx≥2，故命题p：“∀x∈R+，sinx+1sinx≥2”应为真命题，故...
