
【名词&注释】
环境污染(environmental pollution)、生活力(viability)、环境条件(environmental condition)、电动车(electric vehicle)、自然界(nature)、根状茎(rhizome)、金属冶炼厂(metal smelter)、单子叶植物(monocotyledon)、自花传粉(self pollination)、异花传粉(cross pollination)
[单选题]通过研究,小红提出了一系列降低铅对环境污染的建议,下列建议中不恰当的事()
A. 使用无铅汽油
B. 开发新的无铅燃料
C. 倡导使用铅蓄电池作动力的电动车
D. 燃煤电厂、金属冶炼厂(metal smelter)的废气经除尘后排放。
查看答案&解析
举一反三:
[单选题]According to those against killing wolves,when wolves eat other animals, .
A. they never eat strong and healthy ones
B. they always go against the law of nature
C. they might help this kind of animals survive in nature
D. they disturb the ecological balance in the wilderness
[单选题]木兰目花被多3基数,显示了与单子叶植物(monocotyledon)的联系。( )
A. 正确
B. 错误
[单选题]自花传粉(self pollination)现象在自然界得以保存,是因为它( )。
A. 比异花传粉(cross pollination)进化
B. 能增强后代生活力
C. 能保持种系特征的稳定
D. 是对环境条件的适应
[单选题]Nine in ten parents said there were significant differences in their approach to educating their children compared with __ of their parents.
A. those
B. one
C. both
D. that
[单选题]
A. expressive
B. encouraging
C. informative
D. interesting
[单选题]下列哪一种导管木质化程度最高?( )
A. 孔纹导管
B. 网纹导管
C. 螺纹导管
D. 梯纹导管
[单选题]三七的( )历来用作止血、散瘀、消肿药。
A. 块根
B. 根状茎
C. 果
D. A和B
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