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【简答题】
图是在探究“固体熔化时温度的变化规律”的实验图象，根据图象回答下列问题： （1）甲图为______的图象，______的图象．（填“晶体”或“非晶体”） （2）在甲图中，______段为熔化过程．由丙图可以知道，该晶体的熔点为______．
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举一反三
【单选题】Refer to Figure 3. To internalize the externality in this market, the government should
A.
impose a tax on this product
B.
provide a subsidy for this product
C.
forbid production
D.
produce the product itself
【简答题】十一制足球场球门的宽是( )米,高是( )米。
【单选题】Refer to Figure 9-3. With trade, China will
A.
import 100 pencil sharpeners.
B.
import 250 pencil sharpeners.
C.
export 150 pencil sharpeners.
D.
export 250 pencil sharpeners.
【单选题】Figure 9-6 Refer to Figure 9-6. Without trade, the equilibrium price of carnations is
A.
$8 and the equilibrium quantity is 300.
B.
$6 and the equilibrium quantity is 200.
C.
$6 and the equilibrium quantity is 400.
D.
$4 and the equilibrium quantity is 500.
【单选题】Figure 9-4. The domestic country is Nicaragua. Refer to Figure 9-4. With trade, Nicaragua
A.
imports 150 calculators.
B.
imports 250 calculators.
C.
exports 100 calculators.
D.
exports 250 calculators.
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