显微镜的放大倍数越高，视野里的细胞数量就越少，视野也越暗．______．

（10分）下面是骨的成分实验，根据表中所给内容完成下列问题。

（1）操作[1]中火烧鱼骨的目的是______________________________。经过此操作，剩下的成分是___________。

（2）操作[2]中用盐酸浸泡鱼骨的目的是_________________________。经过此操作，剩下的成分是___________。

（3）实验研究表明骨的成分主要是：水分、__________和__________组成。

（4）如果将操作[1]和[2]所剩下的物质进行称重，操作[1]中剩下X克，操作[2]剩下为Y克，则，X:Y大约是__________。X k   1 . c o m

（5）骨骼又称为人体的___________，因为人体的99%的___________集中在骨骼和牙齿中；因此，幼儿在发育阶段由于缺少这些物质，会患___________。

以下哪项不符合静态平衡（）

A.物体保持平衡、静止或匀速运动

B.物体没有线加速度

C.合力为零

D.物体没有角加速度

E.合力力矩可不为零

黄肠题凑墓

Government bans on the dumping of sludge anywhere in the ocean are based on the belief that the spread of sludge by ocean currents poses a danger to people. Since it is not clear that sludge dumped on the ocean bottom, far from coasts, would endanger people, the bans should be revised to apply only to coastal waters.
Each of the following, if true, supports the conclusion that the bans on ocean dumping should be revised EXCEPT:

A．The slow-moving water near the ocean bottom mixes so slowly with water closer to the surface that sludge dumped on the ocean bottom would be decomposed by bacteria before currents could bring it to the surface.

B．Many locations on the ocean bottom far from coasts are geologically stable, and unlikely to be disrupted by earthquakes or volcanic eruptions.

C．Deep-sea marine plants and animals in the human food chain live at depths far above the ocean bottom.

D．Dumping large amounts of sludge would have an unknown effect on organisms that live on the ocean bottom.

E．(E) The technology exists to lower sewage sludge to oceanbottom dump sites without contaminating waters closer to the surface.

患者，男，39岁，阑尾切除术后5天，体温38.5℃，伤口红肿，有波动感，首先应如何处理

A．继续观察
B．拆除切口缝线，敞开伤口
C．大剂量抗生素治疗
D．物理治疗
E．B超检查