心理因素对健康的影响主要通过下列哪些发挥作用（）。 A.神经系统 B.情绪 C.情感

当财务杠杆系数为1时，下列表述正确的是（）。

A．息税前利润增长率为零

B．息税前利润为零

C．利息与优先股股息为零

D．固定成本为零

Steve Jobs-A surprising success.

Nothing in the early years of Steve Job’s life suggested that he would be so successful. Born in San Francisco, the child of two students, he was adopted and grew up close to Silicon Valley. While at company-and he and his best friend Steve Wozniak got summer jobs there.

After finishing high school in 1972, Jobs studied at an expensive liberal arts college in Portland, Oregon but he dropped pout after one after one term. He grew his hair and a beard, slept on friends’ floors, and sometimes went to a Hare Krishna temple for free meals. Like many drop-outs at that Beatles-inspired time, his ambition was to visit a guru（古鲁[印度教的宗师或领袖]）in India, which he eventually did with a friend. When they got there, the guru had died.

At this point, Jobs has a limited education, and no obvious talents, apart from a notorious（臭名远扬）ability to talk. However, he did have a devoted friend who was an electronics genius. They were a great team. Without Jobs’ s ambition, high design standards, the ability to make deals and  great maketing skills-Wozniak might well have spent a quiet life designing hardware at HP.

小题1:The article tells us that              .

A．Steve Jobs’s parents lived in San Francisco

B．Steve Jobs’s parents were rich

C．Steve Jobs’s parents worked at Hewlett-Packard

D．Steve Jobs didn’t know his real parents小题2:STEVE Jobs went to a temple because                .

A．He was a Buddhist

B．His family were Indian

C．He had very little money

D．He was inspired by the Beatles小题3:Which of the following is NOT true?

A．Steve Jobs was uneducated.

B．Steve Jobs went to India.

C．Steve Jobs was A GREAT SALESMAN.

D．Steve Wozniak was loyal.小题4:Form the article, Apple was successful because             .

A．Steve Jobs was a computer Genius

B．Steve Jobs and Steve Wozniak were lucky

C．Steve Jobs and Steve Wozniak worked well together

D．Steve Wozniak liked a quiet life

金属铝质轻且有良好的防腐蚀性，在国防工业中有非常重要的作用，利用铝热反应完成钢轨的焊接非常方便迅速。完成下列填空：

（1）在特制漏斗中将铝热剂混合均匀后，引发铝热反应的操作是：                    ；

（2）硅与铝同周期。地壳里硅、铝的含量硅   铝（填＞,＜或=）。SiO₂是硅酸盐玻璃（Na₂CaSi₆O₁₄）主要成分，Na₂CaSi₆O₁₄也可写成Na₂O·CaO·6SiO₂。钠长石（NaAlSi₃O₈）的氧化物形式                          ，长石是铝硅酸盐，不同类长石其氧原子的物质的量分数相同。由此可推知钙长石的化学式为                      ；

（3）某铝合金由Al、Si、Cu、Mg组成。①称取100g该铝合金样品，分成等质量的A、B两份。向A份加入足量NaOH溶液，B份加入足量的稀盐酸。②待两份反应物都充分反应之后，称得滤渣质量相差1.60g，收集得到的两份气体的体积相差2240mL(标准状况下)。则样品中Si和Mg的物质的量分别是     和            。

作为美国全国性的广告自律机构，全国广告审查理事会下设（）部门。

A、广告标准局

B、全国广告部

C、独立广播局

D、食品及药物管理局

E、全国广告审查委员会

氢对钢的危害主要是会对钢材引起如下缺陷：（）、（）、（）。