豆类与谷类蛋白质有互补作用，是因为豆类含有较多的（） A.蛋白质 B.必需氨基酸 C

What’ s the fastest way to learn a language?
 
Learning a new language seems hard and frightening as
we look back on the years of grammar and translations in
school．Yet babies communicate t eighteen months and speak
the language fluently before they go to school.
Firstly and most importantly, a child’ s natural language-learning ability exits only in a speech environment free of translations and explanations of translations and explanations of grammar．Secondly, a child’ s language learning speeds up by constant feedback（反馈）from family and friends．Thirdly, children learn through play.
At Rosetta Stone, you know adults can recover the native language-learning ability they once had as children．At every step and in every skill, you receive immediate and actionable feedback, including speech recognition（识别）, advice and attention.
Every act is an act of play for children and there’ s no reason why it should be different for learners of any age．With Rosetta Stone programs, you rediscover the joy of learning languages．Clever, puzzle-like activities produce sudden “aha!” moments and astonishing language discoveries, we see it all the time．A slow of recognition, as though the brain suddenly realizes what is like to learn a language as a child.
Visit our website and find out how you can make your own language-learning ability active with Rosetta Stone．It’ s the fastest way to learn a language.
小题1:Which of the following as is TRUE about Rosetta Stone?

A．You can learn only a few languages.

B．You will get some advice in time during learning.

C．You may take part in the language school today.

D．You can get your money back after seven months.

小题2:The main purpose of the text is to         ．

A．tell adults how to 1earn a language well

B．present readers to buy CDs of Rosetta Stone

C．present some problems of learning languages

D．compare adults and children 1earning 1anguages

小题3:If there’ s a$499 program，you order it today and pay       .

A．$479

B．$459

C．$449

D．$439

小题4:The passage is most 1ikely to be a（ n）          ．

A．education paper	B．review on 1anguage
C．science report	D．advertisement for a product