冷裂纹断口的形貌受含氢量的影响，随含氢量的增加，断口形貌将由（）向准解理和沿晶发展。

阅读理解。

     My tears run down from my cheeks (面颊) when I talk to my parents on the phone. What are they doing

when I call them? Dad works from seven o'clock in the morning to nine o'clock in the evening. My mum does

all the housework, she also has to work in the field. But I can't do anything for them.

     Every day she gets up at around 4 o'clock in the morning. When I sometimes call her at 7:30 in the evening,

she tells me that she is still in the field and doesn't have supper. I tell her I'll study hard in the school. I also ask

her to take care of herself and dad because I can't live without them.

     Mum says that the happiest time for dad and her is when my sister and I come back home.

     We play cards in the room, watch TV, or do anything we like, with dad and mum making delicious food in

the kitchen. It is also the happiest time for me.

     Love, sometimes, doesn't need many words. Love your parents like they love you. Give them a call, tell

them you miss them.

1. Why can't the writer live without their parents?

A. Because her parents give her money.

B. Because her parents need her to take care of them.

C. Because she loves her parents and they love her very much.

D. Because they afford (提供) her education (教育).

2. The happiest time for the writer's mum and dad is ________.

A. she and her sister help them make delicious food in the kitchen

B. her sister and her coming back home

C. they play cards in the room

D. they work in the field together

3. Which of the following is the best title?

A. Mum and Dad

B. I love you, Mum and Dad

C. My Family

D. I Love My Family

钢筋混凝土偏心受拉构件的抗弯承载力（）。

A．随轴向力的增大而增大

B．随轴向力的减小而增大

C．小偏拉时随轴向力的增大而增大

D．大偏拉时随轴向力的增大而增大

患者男，48岁。发热伴少尿2d就诊。既往肝硬化史。体格检查：T39.5℃，P115次/min，R25次/min，BP80/50mmHg。意识恍惚，颈软，巩膜无黄染，四肢末梢皮肤温度降低。

提示：血HB110g/L，WBC23.0×10⁹/L，N0.90，L0.05，PLT8×10⁹/L；动脉血气显示：pH7.30，PCO₂25mmHg，PO₂68mmHg，HCO₃^-12mmol/L，血乳酸浓度8mmol/L。该患者的诊断可能为（）

A.肝昏迷

B.脓毒性休克

C.流行性脑脊髓膜炎

D.乳酸酸中毒

E.肝硬化

F.DIC早期

以下不属于按生产要素分配的是[ ]

A、转让科技成果获得的收入

B、在公有制企业中工人获得的工资收入

C、在私营企业打工获得的收入

D、出租房屋和土地获得的收入

瓶阀冻结，可以用明火加热或铁器猛击气瓶吗？