第1题
A、Constant Stress
B、Temporary Loading
C、Repetitious Stress
D、Reversal Stress
第2题
A、It has a stoop.
B、The facade is built with brownstone or brown-colored bricks.
C、It’s often a 2 or 3-story townhouse.
D、The facade is built with brownstone only.
第4题
第5题
A、Used to attract animals to pollinate the plant and to disperse its seeds
B、Protecting the plant from herbivores such as insects
C、Used to derive medicine
D、All of the above
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