格劳秀斯认为主权应掌握在（）手中。

Behind our house is the start of a fascinating trail (小径). This trail is one of the old roads that wind through untold miles of forest. My (36) , Beans, and I walk the trail frequently. Normally, Beans sniffs alongside the trail to follow the smell of a deer track or explore some cause known only to him.

Beans is a white dog, quite handsome and very smart. He not only understands what we tell him, but also often makes sounds as if he were trying to (37) back.

One morning, we took a different route, which led us to an unfamiliar trail. I was sure this trail would eventually lead us to our familiar (38) . But, no. We seemed to be far off course. After two hours, I suddenly realized that Beans probably (39) the way home. So I urged, "Beans, take me home." He ran down a new trail. But it merely led to an intersection (岔道口) of trails.

Soon it became (40) that we were getting nowhere. I began to picture the rest of the day in the (41) , without food or drink. We had walked about ten miles. But Beans seemed totally (42) The sniffing and exploring was going well for him.

Finally, we (43) a crossroad near a highway. Lady Luck suggested I should turn left. We did and (44) reached a cottage beside a field. I knocked on the door and explained my situation to an old man. He laughed and then drove us home.

Since our adventure, I (45) that Beans probably knew all along how to get home.

He was just having too much fan exploring new trails.

37（）

A.turn 

B.kick 

C.jump 

D.speak

现代社会离不开电，家庭用电中：用______辨别零线和火线；用______记录电路消耗的电能；长期不用的家电设备每隔一段时间后需要通电一次，这是______电热（选填“利用”或“防止”）；为了防止电路中电流过大引起导线过热，电路中要安装______．

男，39岁，有肺结核病史，现患持续性膀胱炎，经一般抗菌药物治疗后症状不缓解，怀疑为肾结核。

最常引起人类肾结核的分枝杆菌是（）

A.牛型分枝杆菌

B.结核分枝杆菌

C.鸟分枝杆菌

D.龟分枝杆菌

E.海分枝杆菌

(11分) A、B、C、D、E、F、G、H和I是中学化学中常见的气体，它们均由短周期元素组成，具有如下性质：

①A、B、E、F、G能使湿润的蓝色石蕊试纸变红，I能使湿润的红色石蕊试纸变蓝，C、D、H不能使湿润的石蕊试纸变色；

②A和I相遇产生白色的烟；

③B和E都能使品红溶液褪色；

④将红热的铜丝放入装有B的瓶中，瓶内充满棕黄色的烟；

⑤将点燃的镁条放入装有F的瓶中，镁条剧烈燃烧，生成白色粉末，瓶内壁附着黑色颗粒；

⑥C和D相遇生成红棕色气体；

⑦G在D中燃烧可以产生E和H₂O；

⑧将B和H在瓶中混合后于亮处放置几分钟，瓶内壁出现油状液滴并产生A。

回答下列问题：

(1)A的化学式是________，②中烟的化学式是________；

(2)④中发生反应的化学方程式是

________________________________________________________________________；

(3)⑤中发生反应的化学方程式是

________________________________________________________________________；

(4)C的化学式是__________，D的化学式是__________；

(5)⑦中发生反应的化学方程式是

________________________________________________________________________；

(6)H的化学式是________。

下列可以提高产品价值的是：（）

A.功能不变，提高成本

B.成本不变，降低功能

C.成本增加一些，功能有很大提高

D.功能很大降低，成本降低一些