问题 解答题

显微镜的镜筒下降时,应两眼注视着目镜.______.(判断对错)

答案

当镜筒下降的时候,如果只注视目镜,我们看到不物镜的位置,就容易让物镜压碎了玻片标本,所以在镜筒下降时我们要注视物镜,防止其压碎玻片标本.

故答案为:×

不定项选择
阅读理解

We convince ourselves that life will be better once we are married, have a baby, then another.Then we get frustrated because our children are not old enough and that all will be well when they are older.Then we are frustrated because they reach teenage years and we must deal with them.Surely we'll be happier when they grow out of the teen years.

We tell ourselves our life will be better when our spouse (配偶) gets his/her act together, when we have a nicer car, when we can take a vacation, when we finally retire.The truth is that there is no better time to be happy than right now.If not, then when? Your life will always be full of challenges.It is better to admit as much and to decide to be happy in spite of it all.

For the longest time, it seemed that life was about to start—real life.

But there was always some obstacles (挫折) along the way, an ordeal (苦难) to get through, some work to be finished, some time to be given, a bill to be paid.Then life would start.It finally dawned on me that those obstacles were part of life.Little by little, that point of view also helped me see that there isn't any road to happiness.

Happiness is the road.So, enjoy every moment.And bear in mind that__________.So stop waiting for school to end, for a return to school, to lose ten pounds, to gain ten pounds, for work to begin, to get married, for Friday evening, for Sunday morning, waiting for a new car, for your mortgage(借款) to be paid off, for spring, for summer, for fall, for winter, for the first or the fifteenth of the month, for your song to be played on the radio, to die, to be reborn… before deciding to be happy.

Happiness is a voyage, not a destination.There is no better time to be happy than… NOW! Live and enjoy the moment.

60.The most proper title for the passage should be______.

A.Happiness Is a Frustration   B.Happiness Is a Destination

C.Happiness Is a Dream         D.Happiness is a Process

61.The first two paragraphs mainly tell us_______.

A.life is a worthwhile but challenging voyage

B.so long as you believe you can, you can

C.people tend to think the future will be brighter than now

D.people feel at a loss about their life

62.The writer thinks _______is a real happiness

A.setting our imagination free    B.enjoying our present life

C.finding our own shortcut to success       D.facing obstacles and challenges bravely

63.Which of the sayings can fill in the blank in the fourth paragraph?

A.Time waits for no one     B.Time is money.

C.Tomorrow is another day.    D.Time can work wonders.