【单选题】下列叙述错误的是( )。
A.
指令字在程序段中的顺序没有严格的规定,可以任意的顺序书写
B.
程序段中的每个指令字均以字母(地址符)开始,其后再跟数字或无符号的数字
C.
指令字在程序段中的顺序有严格的规定,必须按顺序书写
【单选题】The May Fourth ______ against imperialism and feudalism began in Beijing in 1919.
【单选题】宁夏平原(灌溉农业)发展种植业需要改造的主要自然因素是( )
【单选题】We may infer from the fourth paragraph that ______.
A.
the PufferSphere is used to replace the campfire
B.
the PufferSphere can display more than two films at the same time
C.
the PufferSphere is helpful to the atmosphere of fashion shows
D.
campfire is often shown on the PtffferSphere during music events
【单选题】下列程序段中,有错误的是()
A.
int main() { float a=2.6,b; b=max(2.1,3.6)=a++; printf("%f",a+b); return 0; }
B.
int f2(int x) { return (x>1?puts("Y"):puts("N")); }
C.
int f() { int x; scanf("%d",&x); return x++,x+5; }
D.
void xchange(int x,int y) { int t; t=x;x=y;y=t; }
【单选题】当今世界安全形势总体是和平的,局部战乱总体缓和,但()紧张总体稳定,局部还是在动荡。
【单选题】Precise location may be used to______.
A.
help police to locate criminals
B.
oversee the movement of a suspect
C.
collect customers' personal information
D.
vend special commodities to customers
【单选题】下列程序段中,有错误的是( )。
A.
int f() { int x; scanf("%d", &x); return x++, x+5; }
B.
int f2(int x) { return (x>1?printf("Y"): putchar('N')); }
C.
int main() { float a=2.6 , b; b=max(2.1, 3.6)=a++; printf("%f", a+b); }
D.
void change(int x, int y) { int t; t=x; x=y; y=t; }
【单选题】— ____ is your birthday? — May fourth. [ ]
【单选题】The fourth paragraph tells us that bees may be harmed by ultra-violet light.