According to Landes, the main reason that some countries are so poor is that ______.
A. they lack work ethic
B. they are scientifically backward
C. they lack rationality
D. they are victimized by colonists
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In discussing Landes's work, the author's tone is ______.
A. matter-of-fact
B. skeptical
C. reproachful
D. enthusiastic
函数y=x3-3x的单调递减区间为（）。
A. （-∞，-1]
B. [-1，1]
C. [1，+∞）
D. （-∞，+∞）
Utopia is the work of ______
A. Spenser
B. Donne
C. Blake
D. More
The author suggests that implementing manufacturing competitiveness is a strategy that is ______.
A. flawed and ruinous
B. shortsighted and difficult to sustain
C. popular and easily accomplished
D. useful but inadequate
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