______ that the trade between Mexico and the Philippines reached its highest point.
A. During the 1960"s
B. It was in the 1960"s
C. That it was in the 1960"s
D. It was the 1960"s
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【C10】
A. being
B. are
C. be
D. were
Only in times of great crisis______the majority of Americans demand that their representatives seek bold solution to basic problems.
A. did
B. does
C. will do
D. do
大航海时代,长期在海上航行的水手经常得坏血病,有些水手上岸后吃一些柑橘蔬菜,坏血病就痊愈了。科学家研究发现,果蔬中存在着一种可治坏血病的物质,该物质是()。
A. 叶酸
B. 维生素C
C. 谷氨酸
D. 维生素
德国历史上长期处于城邦分治的封建割据状态,直到 1871 年才统一,下列人物中领导德意志经过三次王朝战争实现统一的是()。
A. 拿破仑
B. 俾斯麦
C. 黑格尔
D. 希特勒