What is the author's attitude toward humanities? A: supportive and advocative B: critical C: indifferent D: over-reactive

Push processes may also be referred to as reactive processes.

13. A: generous B: reactive C: stagnant D: dynamic

反动的 A: reactive B: reactionary C: reactional D: recessive

Mains voltage is sufficiently stable for the reactive power and within the range of_______________.

Cindy passed by Elsa’s desk and accidentally knocked over Elsa’s building blocks. Elsa turned immediately to slap Cindy in the face. Which type of aggression did Elsa demonstrate? ( ) A: Proactive aggression. B: Provocative aggression. C: Reactive aggression. D: Deliberate aggression.

Picking nose is a _______ habit. A: reactive B: receptive C: repulsive D: rewarding

It has been proved that the chemical islethalto rats but safe for cattle. A: fatal B: reactive C: unique D: vital

I have warned you not to do that __________. A: over and over B: over and over again C: again and over D: again and again over

求函数$y = {{1 + \root 3 \of {{x^2}} - \sqrt {2x} } \over {\sqrt x }}$的导数$y' = $( ) A: $ {1 \over 2}{x^{ - {3 \over 2}}} + {1 \over 6}{x^{ - {5 \over 6}}}$ B: $ - {1 \over 2}{x^{ - {3 \over 2}}} + {1 \over 6}{x^{ - {5 \over 6}}}$ C: ${1 \over 2}{x^{ - {3 \over 2}}} - {1 \over 6}{x^{ - {5 \over 6}}}$ D: ${1 \over 3}{x^{ - {3 \over 2}}} - {1 \over 6}{x^{ - {5 \over 6}}}$