问题
选择题
在显微镜下观察“bpq”，看到的是（ ）
A．bpq
B．bdq
C．bqq
D．qbb
答案
显微镜看到的物像不但上下颠倒，左右也颠倒．做此类题有个小诀窍，就是把这个在显微镜下看到的字母写到一张小纸上，然后把这张纸旋转180度后，再看就是左右上下颠倒的图象了．将字母“p”写好，旋转180°后得到的是字母“d”
故选：B
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在显微镜下观察“bpq”，看到的是（ ）
A．bpq
B．bdq
C．bqq
D．qbb
显微镜看到的物像不但上下颠倒，左右也颠倒．做此类题有个小诀窍，就是把这个在显微镜下看到的字母写到一张小纸上，然后把这张纸旋转180度后，再看就是左右上下颠倒的图象了．将字母“p”写好，旋转180°后得到的是字母“d”
故选：B
| 先阅读短文，掌握其大意。然后从方框中所给的词中选出恰当的10个，并用其适当形式填空， 每个此限用一次。 | |
when he was three. His grandfather 2 in bed for many years. His mother worked so 3 that she is ill now. She will not 4 money for her family. The family is in 5 . Yang Liang can't go to school 6 other students. When the local government knew the things, they took 10, 000 yuan 7 the family. They let Yang Liang keep his 8 . Yang Liang needn't 9 any money for school. When the famous ping-pong player Deng Yaping knew this, she 10 to help him finish his study until he graduated from the university. |