观察是科学探究的一种基本方法。下列各项活动中属于观察的是A．上网搜索资料B．用直尺测量肾蕨的高度C．进行人口普查D．用放大镜看蚂蚁的结构-七年级生物

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• For a year, black people refused __________ the city house.[ ]A. takingB. to takeC. seatD. to sit on
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• Ourteachersaskus_____onthestreet. [ ]A.nottoplayB.don'tplayC.notplayD.noplay -七年级英语
• —I'd like ________ the after-school club,but I'm not sure what I should do.—What do you li
• It's convenient _ _ by bus in Hong Kong. [ ]A. travel B. to travel C. traveled-九年级英语
• Li Yang says he needs __________.[ ]A.have a rest B.to have a restC.has a restD.to having a rest-八年级
• We stopped , but there was no more sound. [ ]A. listening B. to listenC. to listening-九年级英语
• His mother decided ________ her holiday in Tianjin.[ ]A. spendB. spendingC. to spend-九年级英语
• The little girl is happy __________ her parents.[ ]A. to seeB. seesC. seeingD. saw-八年级英语
• By ______ part in "Chinese Bridge" programs, students in Chongqing got a great chance ____
• 某研究小组要进行“初中生生活方式的调查”，采取的措施不当的是A．调查前应拟好调查提纲B．只调查与自己熟悉的同学C．利用问卷的形式获取数据D．用数学方法进行统计和分析-七年级生物
• Restaurant owners have to know how ________ food. [ ]A. makeB. making C. to makeD. makes-九年级英语
• 要了解植物在公园中的分布情况，常用的科学方法是（）A．测量B．调查C．观察D．实验-七年级生物
• The man put on his glasses __________ see clearly.[ ]A. thatB. so that toC. in order thatD. in order
• I haven't got an armchair_________. Will you make room for me?[ ]A. To sit B. to sit inC. for s
• 用所给词的适当形式填空。1. Everyone wants _______ ( achieve) his or her dream.2. I think Zhang Renjie is much___
• -I haven't been to the Great Wall.-If you have an opportunity ________ there, you must take it.
• It's good habit ____ breakfast every day. [ ]A. had B. have D. has D. to have -九年级英语
• The box is too heavy for him . [ ]A. to carry B. to carry itC. carrying-九年级英语
• 科学探究是学习和研究生物学的重要方法。下列关于“尝试探究水温对金鱼呼吸次数影响”实验的相关叙述中，正确的是A．实验过程中不需要用温度计测量水温的变化B．实验组和对照组除-八年级生物
• 科学探究的实验设计时，一般要：A．设置对照实验，设计单一实验变量B．设计单一实验变量，其他因素不加控制C．认真做好实验记录，并全部用图表表示出来D．设计几十组实验，同时进-九年级生物
• You're too heavy. You should try __________ junk food.[ ]A. not eat B. not to eatC. to not eat
• In France it's rude ______ you're full, you should just say," It was delicious".
• 今年5月在阿根廷中部发现了身长超过40米的泰坦巨龙类恐龙化石，这种巨型恐龙比以前发现的霸王龙、剑龙等都要大，是目前世界上发现最重也是最长的恐龙物种。得出这一结论所运-七年级生物
• It is important for us ______ English well. [ ]A. to learn B. learning C. learns D. learned -八年级英语
• My little brother wants_____ a movie actor.[ ]A. isB. beC. to beD. to is-七年级英语
• 用括号内所给词的适当形式填空。1. Did you expect_____ (see) your father?2. You can see the picture on the wall over
• 句型转换1. Li Lin was born in Shanxi Province in 1982.(对画线部分提问) ____ was Li Lin born?2. He could ride a
• That is a good place hang out.[ ]A. forB. toC. on D. with-九年级英语
• Mother often tells Tom ______ too much time playing video games. [ ]A. not to spendB. to not spendC.
• He is patient enough ______ for a long time without ______ angry.[ ]A. waiting, gettingB. waiting, g
• He found ______ very interesting _____ an actor.[ ]A. that; to be B. it; being C. it; to be D. it is
• Don't forget_____ your girlfriend here next time. [ ]A. to bringB. bringing C. to takeD. taking
• We should try our best _____ hard.[ ]A. workB.worksC.workingD.to work-八年级英语
• “一只雄黑猩猩飞快下了树，并且不慌不忙地向我走来，当走到离我还有三步远时，它站住了，毛发耸立起来，样子凶暴可怕……”这是珍妮·古道尔对黑猩猩的一段记录。珍妮·古道尔运用-七年级生物
• 为确保实验结果的科学性，影响实验的其他因素应：A．相同B．不同C．相似D．随意-七年级生物
• Oh,Iforget______theletter______him.SoIcan'tfinditanywhere. [ ]A.tosend,toB.tosend,forC.sending,
• He got very angry but many of us thought there was no reason .[ ]A. to beB. to being C. being-九年级英语
• There is ________ everything to such a silly person.[ ]A. not need to explainB. no need to explainC.
• They decided _____in the mountains. [ ]A. hiking B. on hike C. to hike D. not hiking -八年级英语
• I told Janeher homework before Friday. [ ]A. finishB. finishesC. finishing D. to finish-八年级英语
• Theywilldecidewhether____themovieTheSoundofMusicatthecinema. [ ]A.seeB.toseeC.seeingD.saw -八年级英语
• 根据句意或句子的语法要求，用括号中所给单词的适当形式填空。 1. My grandpa likes ________ (chat) with his friends under the big tre
• I'm tired. Let's stop _a break.[ ]A. haveB. to have C. havingD. has-八年级英语
• 某兴趣小组的同学设置了35℃和10℃两种水温，探究“不同水温对金鱼呼吸的影响”．这种探究方法属于（）A．观察法B．分类法C．实验法D．调查法-七年级生物
• 现代生物学研究的重要方法是：A．调查法B．实验法C．比较法D．观察法-七年级生物
• He pretended _________ when he met a bear.[ ]A. deadB. be deadC. to be dead-九年级英语
• Drivers shouldn't be allowed_ after drinking,or they will break the law.[ ]A. driveB. drivingC.
• I woke up late this morning. I______ to get to school on time. [ ]A. have to rush B. had to rush C.
• — What's your plan _____ the coming holiday?— I wish _____ around the country and take some pic