考试新辅导之托福写作题库新增试题八3
21。Underlying aerodynamics and all other branches of theoretical mechanics are theA B C
laws of motion who were developed in the seventeenth century。
D
22。Was opened in 1918，the Phillips Collection in Washington，D。C。，was the first
A B
museum in the United States devoted to modern art。
C D
23。A mortgage enables a person to buy property without paying for it outright;thus
A B C
more people are able to enjoy to own a house。
D
24。Alike ethnographers，ethnohistorians make systematic observations，but they also
A B C
gather data from documentary and oral sources。
D
25。Basal body temperature refers to the most lowest temperature of a healthy
A B C
individual during waking hours。
D
26。Research in the United States on acupuncture has focused on it use in pain reliefA B C D
and anesthesia。
27。The Moon‘s gravitational field cannot keep atmospheric gases from escape into
A B C
space。
D
28。Although the pecan tree is chiefly value for its fruit，its wood is used extensivelyA B C
for flooring，furniture，boxed，and crates。
D
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