C. questioned

　　D. discussed

　　63. What can be inferred from the passage?

　　A. The ASL project was first set up in Africa for the study on Washoe.

　　B. Washoe may communicate with other chimps by signing.

　　C. Washoe must have been able to speak 250 words or so.

　　D. The researchers will prove that most chimps could use language.

　　C

　　MAP ARTIST PROGRAM

　　Map Artist is the perfect tool for creating customized （定制的） maps to include in research projects and reports. Map Artist offers endless possibilities. It has a huge collection of map styles to choose from, and they can be customized to suit your special needs. In this program, we will assume you have been asked to create a map for a social studies report.

　　Step 1. When you open Map Artist, a world map will be displayed. Type “USA” in the dialogue box. Click GO. A map of USA will be displayed.

　　Step 2. Click on the drop-down menu next to the outline map of the state. Click on the type of map you need for your report.

　　· OUTLINE shows only the outline shape of the state with no highways or population centers indicated.

　　· TOPOGRAPHIC indicates elevations（海拔）as well as the location of major cities.

　　· SHADED RELIEF shows only natural landforms （mountains, valleys, rivers） and national parks.

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