扣缴义务人每月所扣的税款入国库的期限为______：A．次月3日 B．次月7日 C．

在“探究加速度与力、质量的关系”实验中：

（1）某同学在接通电源进行实验之前，将实验器材组装如图所示．请你指出该装置中的错误或不妥之处（至少两处）：______

（2）改进实验装置后，该同学顺利地完成了实验，下图是他实验中得到的一条纸带，图中A、B、C、D、E为相邻的计数点，相邻的计数点的时间间隔是0.10s，标出的数据单位

是cm，则小车的加速度为______．

阅读下面短文，掌握其大意，从每题所给的A、B、C、D四个选项中，选出最佳选项，并在答题卡上讲该项涂黑。

A Race Against Death

It was a cold January in 1925 in North Alaska. The town was cut off from the rest of the world due to heavy snow.

On the 20th of that month, Dr.Welch   36   a Sick boy, Billy, and knew he had diphtheria, a deadly infectious(传染的)disease mainly affecting children. The children of Nome would be  37  if it struck the town. Dr.Welch needed medicine as soon as possible to stop other kids from getting sick.   38  , the closest supply was over 1,000 miles away, in Anchorage.

How could the medicine get to Nome? The town`s  39  was already full of ice, so it couldn`t come by ship. Cars and horses couldn`t travel on the   40  roads. Jet airplanes and big trucks didn`t exist yet.

41  January 26, Billy and three other children had died. Twemty more were   42  . Nome`s town officials came up with a(n)  43  . They would have the medicine sent by   44  from Anchorage to Nenana. From there, dogeled(狗拉雪橇)drivers—known as “mushers”—would   45  it to Nome in a relay(接力).

The race began on January 27. The first musher, Shannon, picked up the medicine from the train at Nenana and rode all night.  46  he handed the medicine to the next musher, Shannon`s face was black from the extreme cold.

On January 31， a musher named Seppala had to   47  a frozen body of water called Norton Sound .It was the most  48  part of the journey. Norton Sound was covered with ice,which could sometimes break up without warning.If that happened,Seppala might fall into the icy water below.He would  49  ,and so would the sick children of  Nome.But  Seppala made it across.

A huge snowstorm hit on February 1.Amusher  named Kaasen had to brave this storm.At one point,huge piles of sonw blocked his 50  .He had to leave the trail (雪橇痕迹)to get around them.Conditions were so bad that it was impossible for him to  51  the trail again. The only hope was Balto,Kaasen’s lead dog, Balto put his nose to the ground, 5 2  to find the smell of other dogs that had traveled on the trail.If  Balto failed,it would mean disaster for Nome.The minutes passed by.Suddenly, Balto began to  53  .He had foung the trail

At 5:30 am on February 2, Kaasen and his dog  54  in Nome. Within minutes,Dr.Welch had the medicine.He quickly gave it to the sick children.All of them recoverd.

Nome had been  55  .

38（）

A.Moreover

B.Therefore

C.Otherwise

D.However

关于碱性磷酸酶测定的临床意义错误的是( )

A．骨骼疾病时ALP不增高

B．ALP在孕妇和儿童可出现增高

C．肝内局限性胆管阻塞时(常见于肝癌)，ALP明显增高，ALT无明显增高，血清胆红素大多正常

D．阻塞性黄疸患者ALP增高，ALT轻度增高

E．肝细胞性黄疸的转氨酶活性很高，ALP正常或稍高

风冷是利用（）作为冷却介质，将柴油机受热零件的热量传递出去。

A.其他

B.油

C.水

D.空气