New information about medicines

If a teacher attempts to implement the top-down model to teach listening, he is likely to present_______

A．new words after playing the tape
B．new words before playing the tape
C．background information after playing the tape
D．background information before playing the tape

二、考题解析
【教案】
Teaching aims:
Knowledge aim: students will know more about the history of New Zealand.
Ability aim: students can catch some detailed information about the passage.
Emotional aim: students will appreciate different culture and history.
Key and difficult point:
Students will get the history about New Zealand.
Students can express their ideas about the topic.
Teaching procedure:
Step 1: Warming-up
Greet the students.
Watch a clip about “Dad, where are we going” and try to describe the video.
Step 2: Pre-reading
Show some pictures to introduce New Zealand’s background information.
Step 3: While-reading
1st reading: leave the question to you--try to find the key time-points?
2nd reading: now try to find the issues according to responding time-points?
3rd reading: leave the question to them-what is the capital before and now?
Step4: Post-reading
Activity 1: invite two students to retell the passage according the timeline on the blackboard.
Activity 2: divide them into groups of 3 to talk about which country do they like best?
Step5: Summary and homework
Invite a student to make a summary then leave them the homework-search online for the development of coffee culture in China.

If a teacher attempts to implement the top-down model to teach listening, he/she is likely to present __________.

A．new words after playing the tape
B．new words before playing the tape
C．background information after playing the tape
D．background information before playing the tape

共用题干
Natural Medicines
Since earliest days,humans have used some kinds of medicines.We know this because hu-mans have survived .Ancient treatments for injury and disease were successful enough to keep hu-mans from dying out completely.
They were successful long before the time of modern medicine.Before the time of doctors with white coats and shiny（发亮的）instruments. Before the time of big hospitals with strange and wonderful equipment.
Many parts of the world still do not have university-educated doctors.Nor do they have ex- pensive hospitals.Yet injuries are treated.And diseases are often cured.How?By ancient meth- ods. By medicines that might seem mysterious, even magical（有魔力的）.Traditional medicines are neither mysterious nor magical,however.
Through the centuries, tribal（部落的）medicine men experimented with plants. They found many useful chemicals in the plants.And scientists believe many of these traditional medicines may provide the cure for some of today's most serious diseases.
Experts say almost 80%of the people in the world use plants for health care.These natural medicines are used not just because people have no other form of treatment.They are used be-cause people trust them.In developed areas,few people think about the source of the medicines they buy in a store.Yet many widely-used medicines are from ancient sources,especially plants. Some experts say more than 25%of modern medicines come,in one way or another,from nature.
Scientists have long known that nature is really a chemical factory.All living things contain chemicals that help them survive .So scientists' interest in traditional medicine is not new.But it has become an urgent concern.This is because the earth's supply of natural medicines may be dropping rapidly.

It is believed by scientists that traditional medicines______.
A:cancureallkindsofdiseases
B: maycuresomeoftoday,smostseriousdiseases
C: arenolongerusefulformodernmen
D: aretoocheaptoheuseful