两条直线相交组成的4个角中，如果有两个角是锐角，其他两个角一定不是锐角．____

阅读下列材料，在空白处填入适当的内容（不多于3个单词）或括号内单词的正确形式。

When Henry Ford was a middle school student, he did not always pay attention to what his teachers said at school. One day, he and his good friend Tom took a watch apart.

小题1:.    （annoy）and extremely upset, the teacher told them both to stay 小题2:.       school. Their punishment was to stay until they fixed it. 小题3:.        the teacher did not know young Ford’s genius. In about ten minutes, he had repaired 小题4:.    watch and was on his way home.

Henry Ford was always interested in 小题5:.        things worked. He once plugged up the spout (嘴) of a teapot and placed 小题6:.          on the fire. Then he waited to see what 小题7:.         (happen) . The water boiled and, of course, turned 小题8:.          steam. Because the steam had no way to escape, the teapot exploded. The explosion broke a mirror and a window. As a result, the young inventor was 小题9:.          (bad) injured.

Ford’s years of curiosity paid off. He dreamed of a horseless carriage (运输工具). When he built 小题10:.         , the or ld of transportation was changed forever.

安全范围是( )。

A．最小有效量与最小中毒量之间的药物剂量

B．最小有效量与极量之间的药物剂量

C．比最小有效量大些，比极量小些的药物剂量

D．开始出现治疗作用的剂量

E．最大治疗量的一半

患者，男，75岁，反复咳嗽、咳痰及喘息40余年病史，加重伴咳血6天入院。查体：神清，消瘦，呼吸急促，桶状胸。双肺呼吸音粗，可闻及广泛哮喘音及湿啰音，双下肢水肿。该患者吸烟史55年。肺CT示：慢支、肺气肿、支气管扩张及肺间质纤维化改变。诊断为双肺支气管扩张并感染、慢性支气管炎、阻塞性肺气肿。

给该患者进行呼吸训练时，常用的方法不包括（）。

A.胸式呼吸训练

B.腹式呼吸训练

C.缩唇样呼吸训练

D.咳嗽训练

E.放松训练

F.呼吸肌训练

G.快吸气训练

诊断首先考虑

A．风湿性关节炎
B．类风湿关节炎
C．系统性红斑狼疮
D．慢性肾小球肾炎急性发作
E．干燥综合征

伊犁地区回到祖国怀抱是在（）。