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【简答题】
Questions 20-24
Complete each sentence with the correct ending, A-J, below.
Write the correct letter, A-J, in boxes 20-24 on your answer sheet.
A．is the way most people around the world get fluoride.
B．is a threat to public safety.
C．can occur as a result of mishaps in adding fluoride to water.
D．can be regarded as nutritious.
E．is a widespread health issue in developed countries.
F．is not as common in infants.
G．is the best protection against tooth decay.
H．is required to sustain our material survival and biological growth.
I．is visible as faint lines across the teeth.
J．is difficult to achieve amongst poorer people.
Questions 20-24A-JA-JA constant, low level of fluoride in the mouth
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参考解析：
刷刷题刷刷变学霸
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【单选题】某企业由一位总经理和两位副总经理组成领导班子，工作有魄力，开拓创新意识强，经常超负荷工作，该企业产品在市场上有一定的竞争能力，企业经济效益也不错，但近一段时期以来，随着业务量增大，企业经营效益有所下降。为改变这种状况，总经理召集50多个部门的负责人及全体领导班子共同研究。经讨论决定，要立即调整企业组织机构，适当增加企业的管理层次，按产品和业务范围分成8个分公司，调整后，各分公司负责人的责权利统一，...
A.
职能部门职责不清
B.
管理层次太多
C.
管理幅度过大
D.
管理水平不高
【单选题】Do you want to live forever By the year 2050, you might actually get your wish — providing you are willing to leave your biological body and take up residence in silicon circuits. But long before then...
A.
a fading hope
B.
far from certain
C.
just an illusion
D.
only a matter of time
【单选题】Questions 11 to 18 are based on the conversation you have just heard.
A.
The graduate students could understand the lecture.
B.
The undergraduate students could understand the lecture.
C.
Both the undergraduate and the graduate students understand the lecture.
D.
Neither the undergraduate nor the graduate students could understand the lecture.