问题 探究题

小明在“探究物体受到的浮力大小与哪些因素有关”的实验时,做了如图所示的实验。请仔细观察图示并回答下列问题:

(1)从A、B两图可知,物体在水中受到的浮力大小是_______N。

(2)根据B、C两实验,小明就得出物体受到的浮力大小与液体的密度有关,你认为对吗?答:______。理由是:__________________________________。

答案

(1) 3

(2)不对;C未完全浸入

阅读理解
Reading comprehension.
(You may read the questions first.)
                                                                 SCREENGRABS
BBC1
PLANET EARTH
9PM
Fresh Water provides an expansive subject for
the third programme in the BBC's fascinating
new natural history series. Broadly, we
investigate the world's lakes and rivers and the
creatures which inhabit them. Thus we visit
the deepest lake on the planet, Lake Baikal in
siberia. We observe large colonies of Indian

smooth-coated otters (above) looking around.
A magical series which gives us a real sense of
context in relation to the planet we inhabit.

BBC2
FAMILY GUY
11.45 PM
Road to Europe. Without proper identification,     
Brian and Stewie stow away on a plane they
think is leaving for England. They're wrong,
and soon they're in Saudi Arabia (Brian:

"Oh my God, we are finished. We are lost in
the desert.") at the beginning of a long trip
home.
ITV1
AGATHA CHRISTIE'S POIROT

9PM
Cards on the Table. Tonight's mystery
concerns the death of one of London's richest
and most mysterious men, Mr. Shaitana
(Alexander Siddig), who has a fascination
with crime. Shaitana hosts dinner and a game
of bridge in his apartment, but when the time
comes for the first guests to take their leave,
they discover that their host has been stabbed
through the heart.

CHANNEL 4
THE GAMES: LIVE

9PM
For the first time on The Games, the men fight
in a kendo tournament, using 1.2m shinai
(Bamboo swords). The women compete in the
cycling, racing wheel-to=wheel on
competition bikes with no brakes. Plus other
news from the English Institute of Sport in Sheffield.
1. The Fresh Water series at 9PM _____.
A. explores the lakes, rivers and the creatures in them
B. is devoted to the freshwater creatures in the world
C. explains the relationship among inhabitants on the earth
D. focuses on the deepest river on the planet
2. The phrase "stow away" most probably means "_____".
A. hide secretly
B. talk excitedly
C. operate easily
D. guide successfully
3. A mystery story adapted from Agatha Christie's novel will be shown on _____.
A. BBC1
B. BBC2
C. ITV1
D. Channel 4
问答题 简答题