He came back late, _____ which time all

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问题选择题

He came back late, _____ which time all the guests had already left. [ ]

A. after

B. by

C. at

D. during

答案

答案：B

辨音题

选出划线部分与其他两个单词发音不同的单词。
( ) 1. A. bread ( ) 2. A. supper ( ) 3. A. like ( ) 4. A. thirteen ( ) 5. A. food	B. breakfast B. hungry B. fifteen B. girl B. afternoon	C. beak C. student C. drink C. morning C. look

单项选择题

地下的植物被二氧化硅所交代并留有木质结构的木化石，指的是（）。

A.硅化木

B.木变石

C.古木石

D.古植物