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【单选题】
lt seemed such a that people just stood by watching the old lady lying on the ground suffering pains.A.
mess
B.
shame
C.
disaster
D.
fault
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举一反三
【单选题】What is the main topic of this lecture?
A.
The developmental deformities of the butterfly species.
B.
The migratory patterns of certain species of butterflies.
C.
The developmental stages of the butterfly species.
D.
The distinguishing anatomical features of caterpillars and butterflies.
【单选题】下列说法正确的是
A.
一定条件反应：2CO(g) CO 2 (g)+C(s)可自发进行，则该反应的△H＞0
B.
向硫酸亚铁溶液中滴加硫氰化钾溶液产生血红色沉淀说明溶液已变质
C.
在反应KClO 3 +6HCl(浓)=KCl+3Cl 2 ↑+3H 2 O中，当生成1.5mol Cl 2 时，反应中转移的电子数为2.5N A
D.
相同物质的量浓度的下列溶液：①NH 4 HSO 4 ②NH 4 Cl③NH 3 ·H 2 O，水电离程度由大到小的顺序是：①>②>③
【简答题】It is ______ to compare the number of species of ant and butterfly.
【简答题】iMoD was developed from studies of butterfly wings.
【简答题】--- How many __________ (butterfly) are there on the flowers? --- There is one __________ (butterfly).
【简答题】A Play: Four Butterflies(蝴蝶) Characters: Red Butterfly (RB), Green Butterfly (GB), Green Tree (GT), Rose (R), Grandpa Sun (GS) Look! There are four butterflies in the garden. One is red, one is yellow...
【简答题】朗伯 - 比尔定律的物理学意义是:当一束平行 ______ 光通过 ______ 的、 ________ 的、非散射的吸光物质溶液时,溶液的吸光度与溶液的 _______ 和液层 _______ 的乘积成正比。
【单选题】下列酸碱滴定中反应中，其等量点pH值等于7.00的是（ ）
A.
NaOH 溶液滴定 HAc
B.
HCl 溶液滴定 NH 3 ·H 2 0
C.
HCl 溶液滴定 Na 2 CO 3
D.
NaOH 溶液滴定 HCl
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