某地纬度为30°N,春、秋分时,()。A、赤纬为0 B、赤纬为23.5° C、正午的

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问题:

某地纬度为30°N,春、秋分时,()。

A、赤纬为0

B、赤纬为23.5°

C、正午的太阳高度角为60°

D、正午的太阳高度角为90

考点:农学第二章辐射第二章辐射题库
题型:多项选择题

— I often notice Wang Fang        to the old people's home.

— I hear she often helps the old people there.

A. come  

B. comes  

C. came  

D. to come

题型:多项选择题

Founded in 1966,Seacamp,the first program dedicated to the education of youth in marine(海洋的) sciences,is the result of a cooperative effort of parents,scientists,businessmen and camp leaders.Preservation practices and a respect for the marine environment are the philosophy of the Seacamp.

Seacamp’s tropical marine location in the lower Florida Keys enables it to offer a truly unique marine science program.This program is the heart of Seacamp.Young scientists participate in a variety of courses under the guidance of academically trained marine science instructors and biologists.All science activities include studies in both the field and the laboratory.Each session,140 to 160 campers come to Seacamp,mostly from the US,but also from across the world.There are about 30 international campers each summer from an average of twelve countries.Many Seacamp program graduates have gone on to careers as environmental educators and marine scientists.

One of Seacamp’s unique aspects is that campers create their schedules.In addition to science classes,campers choose from a variety of programs to ensure that there is something interesting and exciting for everyone.Campers interested in journalism may work on the camp newspaper,SEASCOPE,which is published periodically during camp sessions.Arts activities are also included.Photography allows campers to take home memories of friends,wildlife,and underwater experiences.

Seacamp teaches the fun and skills of sailing.It’s an excellent way for future marine scientists to become familiar with the winds,tides and currents that are of primary concern in oceanography.Basic Red Cross certification is offered to beginners in sailing.The Red Cross course in advanced lifesaving is taught at Seacamp.The course is designed to increase the campers’ ability to recognize and avoid dangerous water conditions and practices and to use self­rescue skills to get out of dangerous situations.

Parents may bring campers by car to Big Pine Key.Counselors(辅导员) also meet participants at the Miami International Airport on the opening day of camp and accompany them to Big Pine Key on a bus.The fee for round­trip service is $90.To join the Seacamp adventure,interested campers should contact Seacamp for an application.

We love to talk about camp!For more information or to ask any questions you might have,please give our friendly staff a call and we’ll be glad to help!

小题1:According to the text,Seacamp is designed to help campers ________.

A.have a good time at the seaside

B.develop a sense of marine protection

C.make a further study about sea life

D.complete a course about marine wildlife小题2:It can be learned from Paragraph 3 and 4 that ________.

A.Seacamp offers many programs apart from science classes

B.Seacamp is responsible for training marine scientists

C.beginners in sailing should learn the advanced Red Cross course

D.Seacamp provides traditional camp activities such as arts and crafts小题3:The main purpose of the text is to ________.

A.attract the young to Seacamp

B.present Seacampers’ experiences

C.introduce the programs of Seacamp

D.explain the aim of Seacamp

题型:多项选择题

如果有人在1985年以后大学毕业,他就一定读过《邓 * * 文选》。刘杨读过《邓 * * 文选》,所以()。

A.刘杨是1985年以后的大学毕业生

B.刘杨是 * * 党员

C.刘杨可能是1985年以后的大学毕业生

D.刘杨喜欢这本书

题型:多项选择题

关于柔索约束的约束反力说法错误的是()。

A.方向沿柔索中心线

B.为压力

C.作用在接触点

D.方向背离物体

题型:多项选择题

总装备部归口管理装备的订货验收、储存保管、调拨分配。

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