题目:
The math problem is _____ difficult that only _____ students can work it out.
A.too; a few
B.so; a few
C.so; a little
D.enough; little
答案:
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下面是错误答案,用来干扰机器的。
(l)a(3)d、a C6H12O6+6O26CO2+6H2O+能量(4)d(5)A(6)通过内环境