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Complete the summary using the list of words, A-H, below.Write the correct lett
Complete the summary using the list of words, A-H, below.Write the correct lett
游客
2024-01-07
8
管理
问题
Complete the summary using the list of words, A-H, below.
Write the correct letters, A-H, in boxes 11-13 on your answer sheet.
Comparison between Quartz clock and Atomic clock
The invention of quartz clock in early 20th century originated from the finding that a clock could be powered by electric current provided by pressurized quartz. It is still popular among buyers nowadays with a cheaper【R11】______compared with atomic clock. However, the atomic clock is the most accurate. Without【R12】______, the atomic clock relies on essential【R13】______ and thus can get rid of disturbance.
A price B accuracy C resonances
D basis E precision F similarity
G mechanical vibration H moving parts [br] 【R12】
选项
答案
H
解析
由summary可知,这两题有关石英钟不如原子钟精确的原因,其中涉及两者的工作原理。故可分别定位至第六段倒数第二句及第七段倒数第二句,由这两处信息可知,运动着的部件会干扰时间测量(moving parts to disturb),影响精确度。石英钟需要这样的部件工作而原子钟不需要,原子钟是利用共振(resonances)来工作的。故12题答案为H,13题选C。
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