B．y mentioning the experiment in the second paragraph，the author implies that______.（ ）

[A]our definition of what’s normal varies with gender

[B]our focus of attention variesl with gender and age

[C]our definition of what’s average changes over time

[D]our focus of attention is distracted when interfered

[主观题]The underlined word “ There” in the second paragraph refers to (指的是)____________.

[单选题]The purpose of two questions in the second paragraph is to ________.[A] demonstrate why people are amused[B] display what people laugh at[C] bring to light the phenomenon of laughter[D] accent what a phenomenon laughter really is

[单选题]When mentioning “the $4 million to $10 million range” (Lines 3-4, Paragraph 3) the author is talking about.A． gold market.B． real estate.C． stock exchange.D． venture investment.

[单选题]A．ccording to Carol Goman, why seven seconds are all you need to leave a lasting first impression?A．That’s the time your nerves can get controlled.B．That’s the time you need to introduce yourself.C．That’s the time your traits can grab attention.D．Tha

[单选题]The experiment ______ the discovery of a cure for cancer.A． happened toB． led upC． resulted inD． set up

[单选题]The experiment showed that the smaller fish .A． fought over a feast B. went on diet willinglyC． preferred some extra food D. challenged the boss fish

[单选题]The experiment has_________ the possibility of the existence of any life on that planet, but it does not mean there is no life on other planets.A． found outB． pointed outC． ruled outD． carried out

[单选题]The experiment was ______ easier titan we had expected.A． moreB． much moreC． muchD． more much

[单选题]The experiment ended in failure ______the lack of money.A． asB． byC． forD． with

[单选题]The original experiment cannot be exactly duplicated.A . reproducedB . inventedC . designedD . reported