对路面基层材料的主要要求是（）。 A．足够的强度和刚度 B．良好的水稳定性 C．尽可

患者，女性，45岁，近两年来经常头痛、头晕、耳鸣、心悸、记忆力减退、手脚麻木，近一年来于清晨睡醒时经常出现心前区疼痛并向右肩部放散。就诊时，血压170／105mmHg，心电图表现为弓背向下型S-T段抬高。

此患者最可能的临床诊断是（）

A.重度高血压

B.重度高血压伴心功能不全

C.中度高血压伴心绞痛

D.轻度高血压伴心肌炎

E.轻度高血压伴扩张性心肌病

在相同条件下，等质量的水固态时的体积______液态时的体积；水在______℃时密度最大；纯水极难导电，在水中加入硫酸或______，可增强水的导电性；电解水时应通______电；若在正极得到l0mL______气，同时可在负极得到______mL______气．

经济总量平衡是指( )的平衡与协调。

A．消费品供给与消费品需求
B．国民经济供给与国民消费欲望
C．国民经济供给能力与国民消费需求结构
D．总供给和总需求

椎动脉颅内段的主要分支为（）

A.脑膜支

B.脊髓前动脉

C.脊髓后动脉

D.延髓动脉

E.大脑下后动脉

Sometimes we have specific problems with our mother; sometimes, life with her can just be hard work. If there are difficulties in your (1) , it’s best to deal with them, (2) remember that any (3) should be done (4) person or by letter. The telephone is not a good (5) because it is too easy (6) either side to (7) the conversation.

Explain to her (8) you find difficult in your relationship and then (9) some new arrangements that you think would establish a (10) balance between you. Sometimes we hold (11) from establishing such boundaries because we are afraid that doing (12) implies we are (13) her. We need to remember that being (14) from our mother does not (15) mean that we no longer love her. If the conflict is (16) and you cannot find a way to (17) it, you might decide to give up your relationship with your mother for a while. Some of my patients had (18) "trial separations". The (19) allowed things to simmer down, enabling (20) .

7（）

A.formulate

B.commence

C.perceive

D.terminate