单选题难集中注意力。

A、 Declining health.

B、 Lack of attention.

C、 Loss of motivation.

D、 Improper behavior.

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相关试题

单选题它们表明我们的身体正在和病毒做斗争。

A、They reveal the seriousness of the problem.

B、They indicate how fast the virus spreads.

C、They tell us what kind of medicine to take.

D、They show our body is fighting the virus.

单选题无辜者被毫无理由地怀疑。

A、Hardworking students being accused of cheating.

B、Innocent people being suspected groundlessly.

C、Boy students being often treated as law breakers.

D、Junior employees being made to work overtime.

单选题一次只允许两名学生进入。

A、requesting customers to pay before taking the food.

B、Asking customers to leave their bags on the counters.

C、Allowing only two students to enter at a time.

D、Forbidding students to take food out of the restaurant.

单选题他们可能不得不在老年时继续工作。

A、They may have to continue to work in old age.

B、They may regret the time they wasted.

C、They may have nobody to depend on in the future.

D、They may have fewer job opportunities.

单选题为了早点退休而赚钱。

A、To satisfy the needs of their family.

B、To fully realize their potential.

C、To make money for early retirement.

D、To gain a sense of their personal worth.

单选题它实际上弊大于利。

A、It actually does more harm than good.

B、It causes damage to some organs of our body.

C、It workers better when combined with other remedies.

D、It helps us to recover much sooner.

单选题感冒病毒种类太多，无法识别是哪一种。

A、They haven' t devoted as much energy to medicine as to space travel.

B、There are too many kinds of cold viruses for them to identify.

C、It is not economical to find a cure for each type of cold.

D、They believe people can recover without treatment.

单选题他被紧紧盯着。

A、He was closely watched.

B、He was asked to leave.

C、He was overcharged.

D、He was taken to the manager.