[填空题]This chapter begins with the early part of the life cycle.

[单项选择]Mary was silent during the early part of the discussion but finally she （） her opinion on the subject.
A. gave voice to
B. kept an eye on
C. turned a deaf ear of
D. set foot on

[多项选择] EARLY CHILDHOOD EDUCATION
In the first part of your writing you should present your thesis statement, and in the second part you should support the thesis statement with appropriate details. In the last part you should bring what you have written to a natural conclusion or a summary.
Marks will be awarded for content, organisation, grammar and appropriateness. Failure to follow the above instructions may result in a loss of marks.
Write your composition on ANSWER SHEET FOUR.

[简答题]LiF-NaF-RbF三元相图如图7-1所示。
[*]
确定含RbF30mol％、LiF2Omol

[填空题]The instinctive foundation of the intellectual life is curiosity, which is found among animals in its elementary form. Intelligence demands an alert curiosity, but it must be of a certain kind. The sort that leads village neighbors to try to peer through curtains after dark has not very high value. The widespread interest in gossip is inspired, not by love of knowledge, but by malice; no one gossips about other people’s secret virtues, but only about their secret vices. Accordingly, most gossip is untrue, but care is taken not to verify it. (66) You may see this impulse, in a moderately pure form, at work in a cat that has been brought to a strange room and proceeds to smell every corner and every piece of furniture. You will see it also in children, who are passionately interested when a drawer or cupboard, usually closed, is open for their inspection. Animals, machines, thunderstorms, and all forms of manual work arouse the curiosity of children, whose thirst for knowledge put

[简答题]LiF-NaF-RbF三元相图如图7-1所示。
[*]
根据此三元相图画出LiF-NaF的二元相图示意图。

[简答题]若在MgF₂中溶入LiF，则必须向MgF₂中引入何种形式的空位(阴离子或阳离子)相反，若要使LiF中溶入MgF₂，则须向LiF中引入何种形式的空位(阴离子或阳离子)

[填空题]

Facts about Aging

The overall difference in life expectancy at birth in the United States is about 7 years (i.e.72 for men vs. 79 for women); and at every age women, on average, can expect to live longer than men. Interestingly, older women are more likely to suffer from debilitating illnesses than men. However, this difference seems to reflect the fact that women typically have less wealth and education than men - two factors that are associated with shorter life expectancies for both sexes. When the effects of poverty and education are removed in the relevant statistical analyses, these sex differences in rates of disability disappear.
The elderly generally show very high interest in associating with friends and close family members. What they show less interest in than younger adults is the expansion of their social networks to make new friends.
About one-third of problem drinkers develop their alcohol abuse problem lat