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【单选题】
已知一个运算被定义为(define (firstCalc x) (* x x)),在其基础上进一步定义新运算secondCalc为x 2 +y 2 +z 2 ,下列运算组合式书写正确的是_____。A.
(define secondCalc (+ (firstCalc x) (firstCalc y) (firstCalc z)))
B.
(define (secondCalc x y z) (+ firstCalc x y z))
C.
(define (secondCalc x y z) (+ (firstCalc x) (firstCalc y) (firstCalc z)))
D.
(define secondCalc x y z (+ (firstCalc x) (firstCalc y) (firstCalc z)))
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【简答题】50个20相加得______；1乘360得______．
【单选题】An interesting suggestion on how to measure the temperature on the moon has been______.
A.
put on
B.
put out
C.
put down
D.
put forward
【判断题】For the given structure, if the temperature on the left side of member AC increases【图片】,the temperature on the right side of member AC decreases【图片】, and the temperature of the horizontal members CD a...
A.
正确
B.
错误
【单选题】______ graphing the temperature on a continuous basis,suppose you just take a temperature reading every hour.
A.
By
B.
If
C.
Rather than
【单选题】A report says the temperature on the earth now is much higher than _______ in the past.
A.
this
B.
that
C.
these
D.
those
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