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【单选题】
关于鱼类寄生性纤毛虫的主要特征,下列描述不正确的是()
A.
成体或幼体具纤毛运动器,多数种类终生全身被有纤毛,有的只在生活某一阶段存在纤毛
B.
虫体由囊膜、胞质和胞核组成
C.
纤毛在电镜下的亚微结构与鞭毛不同,较短,数目多,运动节奏性强
D.
生活营养期和胞囊期,靠胞囊或直接接触传播
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举一反三
【单选题】Question 13 is based on the above passage.In the writer's opinion, what is the best way to learn grammar?
A.
Learning grammar naturally as you grow up.
B.
Playing games with a set of rules.
C.
Recalling how you learned your mother tongue.
D.
Doing a lot of grammar exercises
【简答题】Question 13. In what way is Carnegie-Mellon different from Stanford, Berkeley and MIT? ==== Passage 3 ==== Could you reproduce Silicon Valley elsewhere, or is there something unique about it?It wouldn...
【单选题】Soap is more popular in liquid form than in bars in the UK – but there are good reasons to stick with the old traditional way of keeping clean, says Gareth Rubin. According to market research company ...
A.
1
B.
2
C.
3
D.
4
【单选题】世界卫生组织推荐的预防接种的4种疫苗
A.
卡介苗、麻疹疫苗、百白破混合疫苗、脊髓灰质炎疫苗
B.
卡介苗、麻疹流感、百白破混合疫苗、脊髓灰质炎疫苗
C.
卡介苗、麻疹疫苗、伤寒疫苗、霍乱疫苗
D.
麻疹疫苗、流感疫苗、脊髓灰质炎疫苗、天花疫苗
E.
卡介苗、麻疹疫苗、风疹疫苗、脊髓灰质炎疫苗
【简答题】Section C C Dictation Fill in the blanks of the following passage according to what you have heard. The average American housewife goes to the supermarket twice a week. On the average she (11) one or ...
【单选题】Question 13 is based on the above passage.In the writer's opinion, what is the best way to learn grammar?
A.
Playing games with a set of rules.
B.
Learning grammar naturally as you grow up.
C.
Recalling how you learned your mother tongue.
D.
Doing a lot of grammar exercises.
【单选题】Soap is more popular in liquid form than in bars in the UK – but there are good reasons to stick with the old traditional way of keeping clean, says Gareth Rubin. According to market research company ...
A.
1
B.
2
C.
3
D.
4
【判断题】液体静压轴承是用油泵把高压油送到轴承间隙,强制形成油膜,靠液体的静压平衡外载荷。
A.
正确
B.
错误
【单选题】In what way is Carol Fletcher typical of the company's senior staff?
A.
She started working for the company at a low level.
B.
She brought experience from another industry.
C.
She used to run her own company.
【单选题】Soap is more popular in liquid form than in bars in the UK – but there are good reasons to stick with the old traditional way of keeping clean, says Gareth Rubin. According to market research company ...
A.
12
B.
2
C.
3
D.
4
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