84，64，47，33，( )，14A．12 B．14 C．22 D．24

The toxin produced by certain marine snails contains various proteins, one of which, when injected into mice, made mice aged two weeks or younger fall asleep and made older mice run for hiding places.
When mice are suddenly seriously threatened, very young ones react by staying perfectly still, whereas older ones run away.
The facts stated above provide the pest support for which of the following working hypotheses

A．The reaction of mice to sudden, serious threats is triggered by a chemical produced by the body, and this chemical is similar to the protein that was injected into the mice.

B．The protein contained in snail toxin that was injected into the mice ordinarily has the primary function of protecting snails by inducing in those snails complete immobility.

C．The protein that was injected into the mice would have made the mature mice fall asleep, too, if they had been injected with larger doses.

D．Very young mice are as likely to be exposed to sudden serious threats as are older mice.

E．(E) Very young mice are not developed enough to deal appropriately with even the stimuli that they are most likely to encounter.

CD3分子具有（）。

A.中和作用

B.免疫调节作用

C.传导活化信号作用

D.趋化作用

E.引起DTH作用

设有m台完全相同的机器运行n个独立的任务，运行任务i所需要的时间为t_i，要求确定一个调度方案是的完成所有任务所需要的时间最短。
假设任务已经按照其运行时间从大到小排序，算法基于最长运行时间作业优先的策略；按顺序先把每个1务分配到一台机器上，然后将剩余的任务一次放入最先空闲的机器。
[C代码]
下面是算法的C语言实现。
(1)常量和变量说明
m:机器数。
n:任务数。
t[]：输入数组，长度为n，其中每个元素表示任务的运行时间，下标从0开始。
s[][]:二维数组，长度为m*n，下标从0开始，其中元素s[i][j]表示机器i运行的任务j的编号。
d[]：数组，长度为m其中元素d[i]表示机器i的运行时间，下标从0开始。
count[]:数组，长度为m，下标从0开始，其中元素count[i]表示机器i运行的任务数。
i：循环变量。
j：循环变量。
k：临时变量。
max：完成所有任务的时间。
min：临时变量。
(2)函数schedule
void schedule()
int i,j,k max=0;
for(i=0;i＜m;i++)
d[i]=0;
for(j=0;j＜n;j++)
s[i][j]=0;


for(i=0;i＜m;i++) //分配前m个任务
s[i][0]=i;
______;
count[i]=1;

for(______;i＜n;i++) //分配后n-m个任务
int min=d[0];
k=0;
for(j=1;j＜n;j++) //确定空闲机器
if(rain＞d[j])
min=d[j];
k=j; //机器k空闲


______;
count[k]=count[k]+1;
d[k]=d[k]+t[i];
for(i=0;i＜m;i++) //确定完成所有任务所需要的时间
if(______)
max=d[i];

考虑实例m=3(编号0～2)，n=7(编号0～6)，各任务的运行时间为{16,14,6,5,4,3,2}。则在机器0、1和2上运行的任务分别为______、______和______(给出任务编号)。从任务开始运行到完成所需要的时间为______。

英国广播公司改组为公营性质的年代是（）

A.1922

B.1927

C.1930

D.1932

分销成本与产品价格高属于与营销相关的关键成功因素