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【单选题】
选择创建的块后单击右键弹出的快捷菜单不包括（）。A.
重置块
B.
块编辑器
C.
参照块
D.
在位编辑块
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反馈参考答案：
举一反三
【单选题】In describing White as a 'word-artist', the author means that White ______.
A.
was also a cartoonist
B.
was colorful in his descriptions
C.
had artistic background
D.
was a great writer
【简答题】ATP结合盒式转运蛋白（ATP—binding cassette transporters，ABC transporters）
【简答题】1992年甲集团创始人孙某创立了山东淄博甲公司。1993年引进德国水果加工设备，当年安装投产，当年出口浓缩苹果汁。1994年将总部迁到北京，开发国内果汁市场，筹备建设工厂。1995年甲第一包250ml纯果汁成功上市并热销。1996年甲1L家庭装系列产品成功上市。1997年在中央电视台黄金时段投放广告，甲品牌果汁逐步成为全国知名品牌。1998年面向全国布局建厂，甲集团进入快速发展期。1999年甲集团...
【多选题】Why does each cell membrane contain a characteristic set of different transporters?
A.
Transporters are responsible for the movement of most small, watersoluble, organic molecules and a handful of inorganic ions across cell membranes. Each transporter is highly selective, often transferring just one type of solute.
B.
To guide and propel the complex traffic of substances into and out of the cell, and between the cytosol and the different membrane-enclosed organelles, each cell membrane contains a characteristic set of different transporters appropriate to that particular membrane.
C.
For example, the plasma membrane contains transporters that import nutrients such as sugars, amino acids, and nucleotides; the lysosome membrane contains an H + transporter that imports H + to acidify the lysosome interior and other transporters that move digestion products out of the lysosome into the cytosol.
D.
T he inner membrane of mitochondria contains transporters for importing the pyruvate that mitochondria use as fuel for generating ATP, as well as transporters for exporting ATP once it is synthesized.
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