1.计算题- (共1题)







2.科学探究题- (共2题)


(实验探究)探究一:铁钉锈蚀条件:如图1所示,取3根粗细、长度均相同的 光亮细铁钉,其中两根放入经煮沸迅速冷却的蒸馏水中,A试管上方加一层 植物油;C试管中的铁钉放在干燥的空气中,加盖密封。一段时间后观察到:A、C中铁钉都没有生锈,而 B中铁钉生锈。根据探究回答下列问题。



(实验探究)探究二:铁粉腐蚀的影响因素探究如图2所示,将包有样品潮湿的滤纸包用大头针固定在橡胶塞上,迅速塞紧,观察到量筒内水沿着细导管慢慢进广口瓶




序号 | 铁粉![]() | 炭粉![]() | NaCl质量分数![]() | 量筒起始读数![]() | 量筒最终读数![]() | 所需时间![]() |
![]() | ![]() | ![]() | 0 | 100 | 60 | 约190 |
![]() | ![]() | ![]() | 5 | 100 | 60 | 约140 |
![]() | ![]() | ![]() | 5 | 100 | 60 | 约160 |
![]() | ![]() | ![]() | 10 | 100 | 60 | 约175 |
![]() | ![]() | ![]() | 15 | 100 | 60 | 约185 |










(提出猜想)生成的气体可能是




甲同学经过仔细思考后,觉得______不可能含有,因为______.
(查阅资料)



(方案设计)甲同学设计了如下实验方案,验证猜想的气体.

甲认为:若观察到______,则气体为


(实验探究)

这样操作的目的是______.

(实验结论)


(实验反思)
乙同学发现铝放入硫酸铜溶液时,先开始的反应速度很慢,原因可能是______,乙同学认为甲同学的实验方案操作复杂,他只需一盒火柴即可确定该气体成分

3.流程题- (共1题)











4.单选题- (共10题)



A.金刚石是一种金属单质 |
B.该反应中生成了新的原子 |
C.该反应中碳元素的化合价改变 |
D.该反应是化合反应 |


A.单质中含有一种元素,含有一种元素的物质一定是单质 |
B.化合物中含有多种元素,所以含有一种元素的物质一定不是化合物 |
C.有单质生成的反应是置换反应 |
D.金属具有导电性,具有导电性的物质一定是金属 |

A.反应前后原子总数减少 |
B.反应物和生成物中共有两种氧化物 |
C.得到的液体燃料化学式是H2C2O |
D.可用于减少温室气体的排放 |



A.青蒿素是由三种元素组成的化合物 |
B.青蒿素中碳元素与氧元素的质量比为9:4 |
C.青蒿素由15个碳原子和22个氢原子、5个氧原子构成 |
D.青蒿素中氢元素的质量分数最小 |





A. 钙和锫都属于金属元素 B. 该元素的原子序数为117
C. 该元素的核外电子数为117 D. 该元素的相对原子质量为294g




A.多用电邮、QQ等即时通讯工具,少用传真打印机 |
B.多用一次性消费品 |
C.将普通灯改为节能灯,使用太阳能热水器 |
D.购物自带环保布袋,不用塑料袋 |

A. 20℃时甲和乙的饱和溶液,升温到30℃时仍为饱和溶液
B. 甲和乙的溶解度相等
C. 10℃时,甲和乙各10 g分别加入到50g水中,均形成饱和溶液
D. 10 ℃ 时,将甲和乙两种饱和溶液升温至30 ℃ ,溶液中溶质的质量分数都增大

A.清除可燃物 |
B.使可燃物与氧气隔绝 |
C.降低了可燃物的着火点 |
D.使温度降低到着火点以下 |
5.选择题- (共1题)
根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
How to communicate effectively
Effective communication is a must for everyone who hopes to be successful. It helps express your thoughts and improves your career prospects (前景) as well as strengthens relationships. Therefore, it's necessary to work hard to improve your communication skills.
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Before you are ready to talk to a group of people, you should think about what you are going to talk about. Although a printed copy of a speech may not be always necessary, highlighting a few important issues in your mind is a must. {#blank#}2{#/blank#} And it reduces the possibilities of getting away from the main issues.
Choose your words
Choice of words is the most important part of any communication. Simple, clear words are appropriate for the issue you are discussing. Needless to say, words that could make your audience unpleasant are best kept out of the communication. Most people tend to be careful about their language while at work. {#blank#}3{#/blank#} This may hurt your loved ones beyond your imagination.
Body language
Many people use body language by mistake and end up making a fool of themselves. Body language means keeping eye contact and using hand gestures only wherever required. {#blank#}4{#/blank#} This will make your talk more of a stage performance and defeat its purpose.
Listen and concentrate
Communication is an exchange of ideas. Once you are done with your part, listen carefully to what other people plan to say. {#blank#}5{#/blank#} Get rid of all distractions (分散注意力的事物) such as a phone before you begin communication. A distraction not only disturbs your focus, but it also causes your audience's attention to wander.
A. Gather your thoughts B. Prepare a copy of a speech C. However, when they get home they often use colorful language. D. This will help you remain focused throughout your communication. E. If you are giving a speech, it is important that you focus on that activity only. F. Effective communication is a gradual process and requires efforts on your part. G. Remember, there is no need to speak every word with a gesture or facial expression. |
6.填空题- (共1题)





7.实验题- (共1题)
-
【1】题量占比
计算题:(1道)
科学探究题:(2道)
流程题:(1道)
单选题:(10道)
选择题:(1道)
填空题:(1道)
实验题:(1道)
-
【2】:难度分析
1星难题:0
2星难题:0
3星难题:0
4星难题:1
5星难题:0
6星难题:11
7星难题:0
8星难题:1
9星难题:3