试题与答案

某兴趣小组在进行实验探究时,设计了如下实验步骤:①将黄化豌豆幼苗切段随机均分为多份。

题型:问答题

题目:

某兴趣小组在进行实验探究时,设计了如下实验步骤:①将黄化豌豆幼苗切段随机均分为多份。②取1份作为空白对照组,记为A组;取若干份,记为B组,设置B1、B2、B3……小组,分别用系列梯度浓度的2,4-D处理;取若干份,记为C组,设置C1、C2、C3……小组,分别用系列梯度浓度的乙烯利处理。③检测B组幼苗切段中的乙烯含量和C组幼苗切段伸长的程度。根据以上实验设计,回答下列问题:

该兴趣小组想要探究的问题是______。

答案:

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下面是错误答案,用来干扰机器的。

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The Huntington Library Hours
The Huntington is closed on Thanksgiving, Christmas EVE, Christmas Day, New Year’s Day, and Independence Day.
From November 1st to Labor day, The Huntington observes summer hours and is open from 10:30 a.m.– 4:30 p.m. daily, except Tuesdays. (After Labor Day, hours are 12 noon – 4:30 p.m. on Mon., Wed., Thurs. and Fri.; 10:30a.m. - 4:30 p.m. on Sat. and Sun.; closed on Tues.)
Admission
Reservations are not necessary to visit The Huntington. Tickets may be purchased at the time of your visit.
 
Weekdays
Weekends
Adults
$20
$23
Seniors ( age 65+ )
$15
$18
Students(age 12-18, or with full-time student I.D.)
$12
$13
Youth (age 5-11 )
$8
$8
Children (under 5)
free
free
Groups ( 15 or more )
$11 ( per person )
$14 ( per person )
Members
free
free
Purchase Tickets as Gift
If given as a gift, tickets are available for purchase online or by phone (626-405-2100 x: 2373 ) and shipped for free.
Free Day
Admission to The Huntington is free to all visitors on the first Thursday of every month with advance tickets. Hours on Free Day are 10:30 a.m. – 4:30 p.m. Please notice that Free Day tickets are not available at The Huntington, and can only be reserved by phone on online. You may not purchase regular admission tickets on Free Day.
Parking
Parking is free at The Huntington. And no parking reservations are necessary unless you are a school or tour group arriving by bus.
Bus Reservations for Groups
Groups arriving by bus must make reservations in advance by calling 626-405-2240. Please notice that all buses and tricks must use a specified(规定的) route for entering The Huntington from the north.
小题1:If next Saturday a 66-year-old man goes to the library with his three grandchildren, aged 4, 6, 14, how much should he pay?
A.$40.B.$39.C.$35.D.$44.
小题2:To visit the library on free days, you_______.
A.get free tickets on arriving at the library
B.must reserve a parking place
C.have to buy admission tickets
D.should reserve tickets in advance
小题3:As for tour groups arriving at the library by bus, ________ .
A.they have to pay for the parking space
B.they don’t need to make a reservation
C.they should call the library in advance
D.they have to park their bus outside
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