题目内容
（请给出正确答案）
Explain why 0. 100 m NaCl in water does not have a freezing point equal to(a)- 0. 183℃ (b)- 0. 366℃
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A.0. 5～1. O m
B.1. 0～2. O m
C.1. 5～2. 5 m
Explain why none of the lanthanoid sesquioxides, Ln2O3, is as acidic as Al2O3
A．if
B．unless
C．but
D．although
What does the underlined sentence "She is at a loss to explain it" mean？
A．In her opinion it was a loss to the clothes shops where she stole things.
B．She doesn't have any idea why she has the desire to steal from shops.
C．She thinks it is a loss for her to explain why she stole things from shops.
D．Personally she feels ashamed and embarrassed for her shoplifting actions.
Why does the author mention the visible-light microscope in the first paragraph？
A．To begin a discussion, of sixteenth-century discoveries.
B．To put the X-ray microscope in a historical perspective.
C．To show how limited its uses are.
D．To explain how it functioned.
Why does the author mention the "mother" and "father" in the first paragraph？
A．To present the background of statistics in a humorous and understandable way
B．To point out that parents can teach their children statistics
C．To explain that there are different kinds of variables
D．To introduce inferentical statistics
A、Demand is more elastic than supply.
C、Demand is relatively inelastic; a leftward shift in supply will increase total revenue.
E、None of the above.
