2 Choose the correct answer(s). Both answers may be correct. ► It’s a long race/medal. race ► It was a hard race/competition. race, competition 1 How many people took place/took part? ____ 2 Anyone can take part/participate. ____ 3 He broke the record/competition. ____ 4 The race takes place/takes part on Tuesday. ____ 5 Did she win a race/medal? ____ 6 Does she hold/carry the record? ____

A．100-meter race.B．4x 100-meter race.C．Long-jump.D．High-jump. A: 100-meter race. B: 4x 100-meter race. C: Long-jump. D: High-jump.

求不定积分[img=112x35]17da6538063a9e4.png[/img]； （ ） A: (x^4*log(x)^2)/4 + (x^4*(log(x) - 1/4))/ B: (x^4*log(x)^2)/4 - (x^4*(log(x) - 1/4))/8 C: (x^4*log(x)^2)/4 - (x^4*(log(x) - 1/4)) D: (x^4*log(x)^2)/4 + (x^4*(log(x) - 1/4))/8

A={X|X≤1},B={X|X>-4},则A∩B=__________. A: {X|X≤1} B: {X|x>-4} C: {X|-4

设，则f(x)的定义域是( )． A: -4≤x≤4 B: 4＜x＜4 C: 0≤x≤4 D: -4≤x≤16 E: 0＜x≤4

数学式4＜|X|＜10的C语言表达式为（） A: 4＜X&&X＜10||X＞-10&&X＜-4 B: 4＜X&&X＜10&&X＞-10&&X＜-4 C: 4＜X||X＜10||X＞-10||X＜-4 D: 4＜X||X＜10&&X＞-10||X＜-4

下列表达式中，比较结果为true的是（）。 A: $x=5；$x==4； B: $x=5；$x<>4； C: $x=4.0；$x===4； D: $x=4；$x<4；

向量X= (1,2,3,4,5,6,7,8,9,10)，删除向量X的第3个元素的命令是 A: X<-X<-4> B: X<-X (4) C: X<-X (-4) D: X<-X [-4]

函数y=x2+x-12的定义域是（　　） A: {x|x＜-4或x＞3} B: {x|-4＜x＜3} C: {x|x≤-4或x≥3} D: {x|-4≤x≤3}

不等式3x-5<3+x的解集是 A: x≤4 B: x≥4 C: x<4 D: x>4