所谓自动调节渠道是指在渠末压力前池处不设泄水建筑物，且不必运用渠首闸门调节发电量，则

对曲面形体线轮廓度进行检查时，可用______通过______进行。

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，选项中有两项为多余选项。(注意：E涂AB；F涂AC；G涂AD)

Easy Ways to Keep Your Brain Sharp

Everyone is forgetful, but as we age, we start to feel like our brains are slowing down a bit and that can be a very annoying thing.   小题1:   Read on for some techniques worth trying. 

1.    小题2:     

People who regularly made plans and looked forward to upcoming events had a 50 percent reduced chance of Alzheimer’s disease (早老性痴呆症), according to a recent study.   小题3:  Something as simple as setting a goal to have a weekly coffee date with a friend will do. There’s evidence that people who have a purpose in life or who are working on long or short-term goals appear to do better. In other words, keep your brain looking forward.

2. Go for a walk.

Mildly raised glucose (葡萄糖) levels can harm the area of the brain that helps you form memories and physical activity can help get blood glucose down to normal levels. In fact, exercise produces chemicals that are good for your brain.   小题4:  

3. Learn something new.

Take a Spanish class online, join a drawing club, or learn to play cards. A study found that mental stimulation (刺激) limits the weakening effects of aging on memory and the mind. But the best thing for your brain is when you learn something new and are physically active at the same time.   小题5:   Or go dancing with your friends.

A．Focus on the future.

B．This can be especially harmful to the aged.

C．It should be something like learning gardening.

D．So take a few minutes each day to do some reading.E. But don’t worry if your schedule isn’t filled with life-changing events.

F. Luckily, research shows there is a lot you can do to avoid those moments.

G. In other words, when you take care of your body, you take care of your brain

属于民航气象系统的是()。

A.一次雷达系统 

B.二次雷达系统 

C.场面监视雷达系统 

D.风廓线雷达系统 

关于建设工程总承包的发包，下列说法正确的有（）。

A.建筑工程的发包单位可以将建筑工程的勘察、设计、施工一并发包给一个工程总承包单位

B.建筑工程的发包单位不可以将建筑工程的勘察、设计、施工与设备采购一并发包给一个工程总承包单位

C.建筑工程的发包单位不可以将建筑工程勘察、设计、施工割裂开来，分别发包给三个工程总承包单位

D.建筑工程的发包单位可以将建筑工程勘察、设备采购发包给一个工程总承包单位

E.建筑工程的发包单位可以将建筑工程施工、设备采购发包给一个工程总承包单位

对严重浸润性突眼的甲亢患者治疗可用（）

A.甲状腺次全切

B.¹³¹I治疗

C.复方碘溶液

D.抗甲状腺药物+糖皮质激素+甲状腺片

E.抗甲状腺药物治疗