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读题,然后回答问题。 Georgeand Sam are going to high school. George wants to be an architect (建筑师) . He is going to build roads, bridges andhouses. Sam is very much interested in cars, and he wants to be a taxi driver.George’s sister, Lily, is good at music. The smart girlwants to be a singer. “What are yougoing to be, Sally ?” Lily asks the lovely girl besideher. “Oh, I want to be a teacher when I grow up.” Answerthe following questions. 1. How manystudents are talking? 2. Whowants to be a singer? 3. Whois Lily? 4. Whatdoes an architect do? 5. Arethey studying at a college?
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【单选题】How many moles of cobalt(Co) atoms are there in 3.01 × 10 10 Co atoms?
A.
5.00 × 10 -17 mol Co
B.
5.00 × 10 -16 mol Co
C.
5.00 × 10 -15 mol Co
D.
5.00 × 10 -14 mol
【单选题】How many economic corridors does the" Belt and Road " Initiative have?
A.
6
B.
5
C.
7
D.
4
【单选题】How many reasons does the news item cite for Japan's slow economic growth?
A.
2.
B.
3.
C.
4.
D.
5.
【单选题】How many economic activities in the U.S. are created by consumers?
A.
two-thirds
B.
three-fourths
C.
half
D.
all
【单选题】About how many hectares of the farmland were lost to economic expansion and natural disasters in 1998?
A.
397, 000 hectares.
B.
261, 300 hectares.
C.
658, 300 hectares.
D.
Not clearly stated.
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