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Tom () since he lost his job three weeks ago.

题目
Tom () since he lost his job three weeks ago.

A、has employed

B、was unemployed

C、had been unemployed

D、has been unemployed

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相似问题和答案

第1题：

I must have thrown away ( ) by mistake.

A、his’

B、his

C、he’s

D、he


参考答案：B

第2题：

设有一组作业，它们的作业提交时刻及估计运行时间如下所示： 作业号 提交时刻 估计运行时间(分钟) Job1 8：30 70 Job2 9：10 30 Job3 9：30 15 Job4 9：50 5 在单道批处理方式下，采用短作业优先调度算法，作业的执行顺序为

A．Job1，Job4，Job3，Job2

B．Job1，Job3，Job4，Job2

C．Job4，Job3，Job2，Job1

D．Job4，Job1，Job2，Job3


正确答案：B
解析：本题考查短作业优先调度算法的概念。短作业(进程)优先调度算法是指对短作业或短进程优先调度的算法。它们可以分别用于作业调度和进程调度。短作业优先调度算法，是从后备队列中选择一个或若干个估计运行时间最短的作业，将它们调入内存运行。而短进程优先调度算法，则是从就绪队列中选出一估计运行时间最短的进程，将处理机分配给它，使它立即执行并一直执行到完成，或发生某事件而被阻塞放弃处理机时，再重新调度。进程首先执行的是Job1，该作业到9:40完成，此时Job2和Job3在等待队列中，按照短作业调度算法，此时执行Job3。Job3在10:10，此时等待队列中有Job2和Job4作业，此时执行Job4，最后执行Job2。正确答案为选项B。

第3题：

How long is the recovery time from a free flap procedure? ()

A、Less than 3 weeks.

B、3 to 4 weeks.

C、At least 6 to 8 weeks.

D、As long as 4 months.


参考答案：A

第4题：

The working parent is not willing to listen to her (his) four-year-old child talking about hissandbox games because she (he) is___________.

A.boring
B.very tired
C.busy
D.angry

答案：B
解析：
通读第四段，注意短语“fartoo beaten down”，可知父母每天工作非常辛苦和疲惫。所以和孩子的交流沟通少了。正确答案为B。A、C、D都不符合题意。

第5题：

______ in the strange city, the poor boy fell to

A. Lost... crying

B. Lost... cry

C. Having been lost... cry

D. To lose... crying


正确答案：A
答案为A。在陌生的城市迷路了，可怜的男孩哭起来了。过去分词lost 做状语，fall to doing sth．“开始做某事”，比较四个选项，只能选A。

第6题：

When setting arguments for a job, which procedure do you use for types that cannot be implicitly converted to and from a VARCHAR2 datatype?()

A. SET_JOB_ARGUMENT_VALUE

B. SET_JOB_VALUE_ANYDATA

C. SET_JOB_ANYDATA_VALUE

D. SET_SPECIAL_JOB_VALUE

E. SET_JOB_ANYTYPE_VALUE


参考答案：C

第7题：

Tod likes sports． He (11) basketball every afternoon． He has a brother． (12) name is Tom． Tom (13) playing sports， but he likes sports shows(节目)． He (14) TV every evening． Tod and Tom like French fries， and they often eat (15)．But French fries are (16) healthy．(17) boys and girls like ice cream， but they don’t like (18) ，(19) do they like? They like fruits．Tod likes apples and Tom likes (20)．

( )11．

A．play

B．plays

C．is play


正确答案：B
．11.B【解析】考查主谓一致。主语是第三人称单数，谓语实义动词play应用其第三人称单数形式。

第8题：

贵阳市科杰电脑培训学校 二级 C、二级 VF 培训班承诺考试不合格退培训费 电话:0851-5561184 网址:www

（20）设有一组作业，它们的作业提交时刻及估计运行时间如下所示：

作业号 提交时刻 估计运行时间（分钟）

Job1 8：30 70

Job2 9：10 30

Job3 9：30 15

Job4 9：50 5

在单道批处理方式下，采用短作业优先调度算法，作业的执行顺序为;

A）Job1，Job4，Job3，Job2

B）Job1，Job3，Job4，Job2

C）Job4，Job3，Job2，Job1

D）Job4，Job1，Job2，Job3


正确答案：B

（20）【答案】B)
【解析】短作业优先调度算法即始终使最短的进程最先得到调度。在8：30时刻，只有作业一提交，运行作业一；当运行到9：10时刻，作业一还需30分钟运行时间，此时作业二提交，但因为作业二的估计运行时间为30分钟，所以继续运行作业一，当运行到9：40分时，作业地运行完毕，此时作业二和三都等待调度，由于作业三的估计运行时间比作业二短，则先运行作业三。依此类推。可得出答案。

第9题：

You are signing on a deck officer，who will be designated as one of the GMDSS operators，before sailing foreign．Which statement is TRUE ________．

A.He/she must have an STCW certificate endorsed as“Valid for Service on Vessels Operating in the GMDSS System”

B.He/she must present either an FCC-issued license or a Coast Guard-issued license

C.You must consult the“List of Qualifications”on the reverse of his/her FCC-issued license

D.His/her Merchant Mariners Document must have an added endorsement as “Radio Electronics Officer”


正确答案：A

第10题：

Until the early 20th century failure to bear a son was grounds for divorce.South Koreans greatly preferred boys,who could not only support their parents financially but also carry out ancestral rites.When ultrasound technology became widespread in the 1980s,many South Koreans used it to detect female femses and then have them aborted.Sex ratios became skewed.In response to these trends the South Korean government made it illegal for doctors to reveal the sex of a fetus,Following the Asian financial crisis of 1997,many women took part-time jobs to supplement the family income.Parents noticed,and began to invest more heavily in educating girls.In 2015 three-quarters of South Korean female secondary-schoolers went to university,compared with two-thirds of their male peers.Since 2009 expectant parents have been allowed to know the sex of their baby after 32 weeks'gestation.Many will have found out before,from doctors who trust that parents'attitudes have changed.


答案：
解析：
直到20世纪初，无法生育男孩还是离婚的理由之一。韩国人民非常偏爱男孩，主要是因为男孩不仅可以在经济上赡养父母，还能延续先祖的宗法。20世纪80年代，超声波技术得到广泛应用，许多韩国家庭借此技术手段对胎儿性别进行鉴别，打掉女孩，最终导致男女比例严重失调。时此，韩国政府出台了一项法规，将医生向准父母告知其胎儿性别列为违法行为。继1997年的亚洲金融危机之后，许多妇女通过做兼职工作来补贴家用。父母们意识到了教育的重要性，并加大对女孩子在教育方面的投资。到2015年，有四分之三的中学女生进入大学深造，相比较而言，中学男生大学升学率是三分之二。自2009年起，准父母在怀孕32周后可以知道他们孩子的性别。他们也能提前从医生那里得知，但医生相信准父母的观点已经改变。

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