反应器大盖泄漏着火事故处理不恰当的是（）A、立即联系消防站对火势进行扑救 B、手动启动

生活中经常使用的小彩灯是          （选填“串联”或“并联”）的．如图所示，有一种节日彩灯上有50只相同的小灯泡，接到照明电路中，50只小灯泡都发光，若电源插头处的电流是200mA，那么，通过每只灯泡的电流是       A，每只灯泡的电压约为         V

14×6的积是（    ），积的个位是（    ）。

Perhaps like most Americans you have some extra pounds to (47) . You may even have tried a fad diet or two, but found yourself right back where you started. The key to weight loss is regular (48) activity. And surprisingly, you don’t have to give up eating or make the gym your second home to see long-term, (49) effects.
Your body needs a certain amount of energy to maintain basic (50) such as breathing, blood circulation and digestion. The energy required to keep your organs functioning is referred to as the resting or basal metabolic rate.
Any time you are active, (51) energy is required. It is obtained from glycogen and fat stored in the blood, liver, and muscles. The key to losing weight is to draw on the fat rather than on the carbohydrate reserves.
Which of the two energy sources you use depends on the intensity and (52) of your activity. The higher the intensity, the more your body will pull from the stored carbohydrates. The lower the intensity, the more your body will (53) on fat as its fuel.
Aerobic exercise is most (54) for weight loss. When you perform aerobic activities you (55) contract large muscle groups such as your legs and arms. Walking, running, rollerblading, swimming, dancing, and jumping jacks are all forms of aerobic activity.
Surprisingly, if your aerobic activity is low to moderately intense and of long duration, you will bum more fat than if you had (56) in a short burst of high-intensity exercise. In short, a brisk 30-minute walk will bum fat while a 100-yard sprint will bum glycogen.

• [A] positive[I] participated
• [B] additional[J] rely
• [C] duration [K] cut
• [D] effective [L] repeatedly
• [E] shed [M] uses
• [F] physical [N] little
• [G] food [O] obvious
• [H] functions

主动脉粥样硬化后形成主动脉瘤最多见部位是（）

A.胸主动脉

B.股动脉

C.肺动脉

D.腹主动脉

E.降主动脉