（1）在句中的必要处加上a an 或 the.（1）1.i have goldfish.Goldfish is called Rosemary.2.Moon moves around Earth ,and they are both smaller than sun.3.we are staying in hotel.Hotel is on Green Street.4.There is window in our classroom .i

（1）在句中的必要处加上a an 或 the.（1）1.i have goldfish.Goldfish is called Rosemary.2.Moon moves around Earth ,and they are both smaller than sun.3.we are staying in hotel.Hotel is on Green Street.4.There is window in our classroom .i ,在必要之处加a an the 下列句子中,有些是对的,但有些需要加上a/an.在必要处填入a/anAnn never wears hat.Are you looking for job?Mary doesn't eat meat.Mary eats apple every day.I'm going to party tonight.Music is wonderful thing.Jamaica is islang.I don't 英语测试题（填空）写出下列句子,在必要的地方填入a、an、some、或any.1.Can you drive_____car?--No,I can`t,but I can ride____bicycle2.Are there_____people in the park?---No,there aren`t____people there.3.Pass me____onion,please 英语天地改写下面的句子,用spare的形容词形式或动词形式来代替句子中用斜线书写的单词或短语,并对句中的其他部分作必要的改动.1.there is an extra wheel in the back of the car.(an extra 斜线）2.l alway 第五课中第三十页的Exercise 练习题,改写下面的句子,用Spare的形容词形式或动词形式来代替句子中用斜体书写的单词或短语,并对句中的其他部分作必要的改动.1、There is an extra wheel in the back of 设a∈R,s：数列{（n-a）2}是递增的数列；t：a＜=1.则s是t的______条件.（填“充分不必要,必要不充分,充要,既不充分也不必要”中的一个）. 在数列｛an｝中,a1=1,a（n+1）=2a（n）+2*n 求数列｛an｝的前n项和Sn要求详细过程何必要说明 已知等差数列an=3 7 11 15.求：（1）135为第几项（2）4m+9(m∈N）是an中的项吗?（3）若a(m) a(t) (m,t∈N）是数列an中的项,则2a(m)+3a(t)是数列an中的项吗? 用spare的形容词形式或动词形式来代替句子中用斜体书写的单词或短语,并对句字中的其他部分作必要的改动.There is an extra wheel in the back of the car.(斜体书写是an extra)I always go on excursions in my free 推导数列公式递推公式An=2A(n-1)+1,(n>1),A1=1（或A1=a）,求An的通项公式?最好附加上求法,高中学的早就忘了,现在想要这个通项公式,以后在复习下吧,数列看来还是有用的. 高中数学.急!答对立马给分已知a.b为正数,n属于正整数集,求证：（a的n次方分之b的n-1次方）加上（b的n次方分之a的n-1次方）大于或等于(1/a+1/b) 写必要步骤即可 【ab是偶数】是【a+b是偶数】的（）条件,可以举例,括号填充分或必要或充要或非充分非必要 从小到大排列的三个数构成等比数列,它们的积为8,并且这三个数分别加上2,2,1 后成等差数列｛an｝中的a3,a4,a5(1)求数列｛an｝的通项公式（2）若bn=（an+1）/an+an/a右下标 (n+1),数列｛bn｝的前n项 数列{an}中,a1=1,a(n+1)=an+t^n（t为常数）,则an= He doesn't have breakfast,but I have ( ) breakfast.在括号里填a,an,the或/.填哪一个?为什么? 用方框内所给的单词或短语的适当形式填空（必要时加助动词）每个用一次 make a kite at the festivea pai用方框内所给的单词或短语的适当形式填空（必要时加助动词）每个用一次 make a kite at t 改变括号内单词的一个字母或加上一个字母构成新词,填入该句的空白处,使句意通顺.1.The old ____ man wouldn't (mind) your shouting at him.2.Sorry,I don't know the (lad)by the ____ in a white dress.3The kind mother doesn't