The mobility of cell phones means you can be anywhere and have the____or should I say the convenience, of a phone.

单选题

The mobility of cell phones means you can be anywhere and have the____or should I say the convenience, of a phone.

答案解析

单选题

In a hypertonic plasma the red blood cells shrink as a result of water leaving the cell body. This shrinkage is called ___________.

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材料题

es of a nuclear family are cared for only if it is possible for the family to do so. In North America,the elderly often do not live with the family;they live in retirement communities and nursing homes.There are many parallels between the nuclear family in industrial societies,such as North America,and of families in societies such as that of the Inuits,who live in harsh environments. The nuclear family structure is well adapted to a life of mobility. In harsh condi-tions,mobility allows the fa

答案解析

材料题

es of a nuclear family are cared for only if it is possible for the family to do so. In North America,the elderly often do not live with the family;they live in retirement communities and nursing homes.There are many parallels between the nuclear family in industrial societies,such as North America,and of families in societies such as that of the Inuits,who live in harsh environments. The nuclear family structure is well adapted to a life of mobility. In harsh condi-tions,mobility allows the fa

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单选题

Stem cell can produce the body’s ________________.

答案解析