更多"The cylindrical shape of a cactus r"的相关试题:
[单项选择]下面是类Shape的定义：
class Shape
public：
virtual void Draw（ ）=0；
下列关于Shape类的描述中，正确的是( )。
A. 类Shape是虚基类
B. 类Shape是抽象类
C. 类Shape中的Draw函数声明有误
D. 语句“Shape s；”能够建立Shape的一个对象s
[单项选择]
下面是类Shape的定义：
class Shape
public：
virtualvoidDraw（）=0；
下列关于Shape类的描述中，正确的是（）。
A. 类Shape是虚基类
B. 类Shape是抽象类
C. 类Shape中的Draw函数声明有误
D. 语句“Shape s；”能够建立Shape的一个对象s
[简答题]讨论Group Work reduces reliance on teacher
[单项选择]The organ-pipe cactus is （ ） in the United States.
A. rare that
B. it rare
C. so that rare
D. rare
[单项选择]Studies have proven that recycling A. reduces carbon emissions in most cases. B. only reduces emissions if it is not done using road transport. C. reduces carbon emissions in a limited number of cases.
[单项选择]
All living cells on earth require moisture for their metabolism. Cereal grains when brought in from the field, although they may appear to be dry, may contain 20 per cent of moisture or more. If they are stored in a bin thus, there is sufficient moisture in them to support several varieties of insects. These insects will, therefore, live and breed and, as they grow and eat the grain, it provides them with biological energy for their life processes. This energy will, just as in man, become manifest as heat. Since the bulk of the grain acts as an insulator, the temperature surrounding the colony of insects will rise so that, not only is part of the grain spoiled by the direct attack of the insects but more may be damaged by the heat. Sometimes, the temperature may even rise to the point where the stored grain catches fire. For safe storage, grain must be dried until its moisture content is 13 per cent or less.
Traditional arts of food preservation took advantage of thi
A. consuming all the grain themselves
B. generating heat and raising the surrounding temperature
C. increasing the moisture content in the grain
D. attacking each other for more grain
[单项选择]Apple trees need moisture in order to thrive.
A. flower
B. flourish
C. pollinate
D. bend
[单项选择]Earthworms occur（） adequate moisture and food and the necessary soil conditions are found.
A. and
B. whenever
C. however
D. wherever
[单项选择]Wearing a seat belt saves lives; it reduces your chance of death or serious injury by more than half．
A. 戴上安全带可以救助许多人的生命，自然也使你免于重伤或死亡。
B. 系上安全带保证安全，它会减少一半多你死亡或者受重伤的机会。
C. 系上安全带可以挽救生命，可使死亡或严重受伤的几率减少一半以上。
D. 系安全带能拯救生命，死亡或严重受伤的可能性少得多。
[单项选择]Do not expose the unit to rain or moisture.
A. This equipment should be placed in a dry place.
B. It does not matter if the unit is cleaned with a wet mop.
C. It can only be used in a sunny day.
[单项选择]What determines the shape of snowflakes
A. The shape of dust particles in the air.
B. The relative humidity.
C. The temperature of the air.
D. The geography of the area.
[单项选择]
看体上有一个名称为Timer1的计时器控件，一个名称为shape1的形状控件，其Shape属性值为3(Cirele)。编写程序如下：
Private Sub Form_Load（ ）
Shape1.Top=0
Timer1.Interval=100
End Sub
Private Sub Timer1_Timer（ ）
Static x As Integer
Shape1.Top=Shape1.Top+100
x=x+1
If x Mod 10=0 Then
Shape1.Top=0
End If
End Sub
以下关于上述程序的叙述中，错误的是（）。
A. 每执行一次Timer1_Timer事件过程，x的值都在原有基础上增加1
B. Shape1每移动10次回到起点，重新开始
C. 窗体上的Shape1由下而上移动
D. Shape1每次移动100
[单项选择]Earthworms occur ______ adequate moisture and food and the necessary soil conditions are found.
A. and
B. whenever
C. however
D. wherever
