更多"[单选题]This 15 his obligation to take"的相关试题:
[单选题]Can you take care of Polly when we are away?
A.wait for
B.look after
C.laugh at
D.take to
[单选题]He had no time and energy to play with his children or shop with his wife, bu! he__________ home a regular salary.
A.did bring
B.does bring
C.did get
D.does get
[单选题]昆虫能分泌信息素。下列是一种信息素的结构简式:
CH3(CH2)5CH=CH(CH2)9CHO
下列说法正确的是：
A.这种信息素不可以与溴发生加成反应
B.它可以发生银镜反应
C.它只能与1mol H2发生加成反应
D.它是乙烯的同系物
[判断题]四氢叶酸在体内充当碳单位的转移载体，如转移-CH2CH3、CH2=CH-等二碳单位。（ ）
A.正确
B.错误
[不定项选择题]共用题干
Health Care in the US
Health care in the US is well-known but very expensive.Paying the doctor's bill after a
major illness or accident can cost hundreds of thousands of dollars.
In the US,a person's company,not the government,pays for health insurance.
Employers have contracts with insurance companies,which pay for all or part of employees'
doctors' bills.
The amount that the insurance company will pay out to a patient differs wildly. It all depends
on what insurance the employer pays.The less the boss pays to the insurance company,the
more the employee has to pay the hospital each time he or she gets sick. In 2004,the average
worker paid an extra US$558 a year,according to a San Francisco report.
The system also means many Americans fall through the cracks（遭遗漏）.In 2004,
only 61 percent of the population received health insurance through their employers,
according to the report. The unemployed,self-employed,part-time workers and graduated
students with no jobs were not included,
Most US university students have a gap between their last day of school and their first
day on the job.Often,they are no longer protected by their parents' insurance because they
are now considered independent adults.They also cannot buy university health insurance because they
are no longer students.
Another group that falls through the gap of the US system is international students.All
are required to have health insurance and cannot begin their classes without it,But exact
policies（保险单）differ from school to school.
Most universities work with health insurance companies and sell their own standard plan
for students.Often,buying the school plan is required,but luckily it's also cheaper than
buying direct from the insurance company.
The health care system in the US takes care of everyone in the country.
A.Right
B.Wrong
C.Not mentioned
[单选题]He notified his friends that his address had changed.
A.informed
B.observed
C.mocked
D.misled
[单选题]在CH3COOH溶液中加入CH3COONa，使CH3COOH电离度降低；在BaSO4饱和溶液中加入Na2S04，使BaS04析出。这是由于( )。
A.前者属于同离子效应．后者属于盐析
B.前者属于同离子效应．后者属于盐效应
C.两者均属于同离子效应
D.两者均属于盐效应
[单选题]The revelation of his past led to his resignation.
A.imagination
B.confirmation
C.recall
D.disclosure
[单选题]He talked over his ideas with his boss.
A.commented
B.mentioned
C.argued
D.discussed
[单选题]His father tried to probe his mind and discover what he was thinking.
A.solved
B.explored
C.involved
D.exploded
