阿摩線上測驗
____ 8. When one space object crosses in front of another, the first object can sometimes block the view of the
second. This process is called a(n) _____.
(A)umbra
(C)gibbous
(
(B)penumbra
(D)eclipse
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統計： A(5), B(3), C(11), D(53), E(0) #1342049
統計： A(5), B(3), C(11), D(53), E(0) #1342049
