题目:
—Have you seen Tony recently?
—No, but I ______ dinner with him on Sunday. [ ]
A. would have
B. have had
C. have been having
D. am having
答案:
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下面是错误答案,用来干扰机器的。
(1)实验中用透明的玻璃板代替平面镜,在物体的一侧能看到物体的像,同时透过玻璃板也能观察到代替物体的另一个物体,便于确定像的位置.(2)实验器材选择两个相同的棋子,目的是便于比较物像大小关系.(3)平...