单选题The running wheel runs along the （）(导轨)on the hatch coaming top.A guide ropeB guide railC side coamingD side roller

OAG的全称是（）。

A.OffiCiAl Airlines GuiDE.B.OffiCiAl AirwA.ys GuiDE.C.Online Airlines GuiDE.D.Online AirwA.ys GuiDe

If you have a problem, don′t worry! Itis easy to say if you don′t have one yourself. But there are only a few peoplewho don′t have troubles. We call them cemeteries. Believe it or not, most of yourproblems may actually be good for you!
You may know about the Great Barrier Reef,running some 1800 miles from New Guinea to Australia. Visitors are often takento see the reef. On one tour, one visitor asked an interesting question. "I notice that the lagoon side ofthe reef looks pale and lifeless, while the ocean side is lively and colorful.Why is this?"
The guide answered: "The coral aroundthe lagoon side is in still water. It dies early with no challenge to itssurvival. The coral on the ocean side is always being worn by wind, waves and storms.It has to fight for its survival every day. As it is challenged, it changes andgrows healthy, and it grows strong." He added, "That′s the way it iswith every living thing."
It is the same with people. Challenged andtoughened, we come alive! Like coral by the sea, we grow. Physical problemsmake for a stronger body. Stress makes for a stronger mind. So, if you have problems,it′s no problem! Just tell yourself, "There I grow again!"
The author′s attitude towardproblems can be described as ______.

A.indifferent
B.neutral
C.positive
D.pessimistic

OAG的全称是（　　）。
A．Official Airlines Guide
B．Official Airways Guide
C．Online Airlines Guide
D．Online Airways Guide

If you have a problem, don′t worry! Itis easy to say if you don′t have one yourself. But there are only a few peoplewho don′t have troubles. We call them cemeteries. Believe it or not, most of yourproblems may actually be good for you!
You may know about the Great Barrier Reef,running some 1800 miles from New Guinea to Australia. Visitors are often takento see the reef. On one tour, one visitor asked an interesting question. "I notice that the lagoon side ofthe reef looks pale and lifeless, while the ocean side is lively and colorful.Why is this?"
The guide answered: "The coral aroundthe lagoon side is in still water. It dies early with no challenge to itssurvival. The coral on the ocean side is always being worn by wind, waves and storms.It has to fight for its survival every day. As it is challenged, it changes andgrows healthy, and it grows strong." He added, "That′s the way it iswith every living thing."
It is the same with people. Challenged andtoughened, we come alive! Like coral by the sea, we grow. Physical problemsmake for a stronger body. Stress makes for a stronger mind. So, if you have problems,it′s no problem! Just tell yourself, "There I grow again!"
The ocean side of the reef is livelyand colorful because______.

A.it is in still water
B.it has no challenge to its survival
C.it has a lot of sunshine
D.it has to fight for its survival everyday