【单选题】Why is the man worried?
A.
He finds history books difficult to understand.
B.
He has to read a lot of history books.
C.
He doesn' t like the history course.
D.
He has lost his history book.
【单选题】代谢组学的特点是( )
C.
内源化合物的上调和下调指示疾病、毒性、基因改变或环境因素的影响
【单选题】以下四个选项中和下面代码功能相同的是( )。 int i = 1; int sum = 0; while (i <= 100) { if (i % 2==0) sum=sum + i; i++; }
A.
for (int x =1; x<=100;x++){ sum=sum+x;}
B.
for (int x =0; x<=100;x+=2){ sum=sum+x;}
C.
for (int x =1; x<=100;x+=2){ sum=sum+x;}
【多选题】市场调查报告撰写的用词技巧中,用的比较多的词是( )
【单选题】以下程序的运行结果是(). int main() { int i=1,sum=0; while(i<10) sum=sum+1;i++; cout< return 0; }
【单选题】The old man is worried _______ her son's safety.
【单选题】以下程序的运行结果是(). int main() { int i=1,sum=0; while(i<10) sum=sum+1;i++; cout<<"i=" << " ,sum=" << sum; return 0; }