问题
填空题
近视眼的明视距离________25 cm，配戴用凹透镜制作的近视眼镜可以得到矫正；远视眼的明视距离________25 cm，其近点比正常眼远，配戴用凸透镜制作的远视镜（又叫老花镜）可以得到矫正．
答案
小于；大于
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近视眼的明视距离________25 cm，配戴用凹透镜制作的近视眼镜可以得到矫正；远视眼的明视距离________25 cm，其近点比正常眼远，配戴用凸透镜制作的远视镜（又叫老花镜）可以得到矫正．
小于；大于
Directions: There are 10 blanks in the following passage. For each numbered blank, there are four choices marked A, B, C and D. Choose the best one and mark your answer on the ANSWER SHEET with a single line through the center.
| Our planet is like a bit spaceship. Our atmosphere acts (51) a shield against harmful radiation and space debris. (52) holds the air and people on the spaceship, (53) everything doesn’t float away. Each of us is an astronaut and our spaceship, the earth, provides our food and water. The sun is our energy (54) and without it we would not be able to survive. (55) every spaceship, the earth is a closed system. The only thing we receive from the outside is energy from the sun. Everything else must be used (56) again. We astronauts don’t seem to realize that this spaceship is the (57) one we’ve got. We (58) its resources and waste the energy the plants have stored from the sun. If we (59) our spaceship, we will destroy ourselves as well. Maybe if we look at the universe which surrounds us, we will appreciate our own spaceship more and take (60) care of it. |
A．As
B．Like
C．With
D．Different from