Travelling around the Sydney district is a wonderful experience.

    The sightseeing options are____(end), but most travelers begin on the harbor at the Sydney Opera House. Known as one of the wonders of the world, it is ____photographer's dream.

    There is a huge ____(choose) of accommodations available in the city and its surrounding area. Darling Harbor is famous for its restaurants and four-star hotels. Under the famous Sydney Harbor Bridge is the Rocks shopping district, which ____(call) “the heaven of shoppers”. You can spend at least a half day____ (wander) through the alleys and side streets to take____everything the shops offer. On the other side of harbor ____(lie) another must-visit spot, the Taronge Park Zoo. With an exciting collection of native animals, including lions and giraffes,____is rare to find a zoo with a view of Darling Harbor and the city skyline.

    The Royal Botanic Garden is within walking distance of the Opera House, and is an absolutely perfect place for a picnic lunch. After lunch, take a walk to Sydney Tower,____you can get 360-degree____(forget) views of the city.

阅读下列材料，回答问题：

材料一：

材料二：

材料三：

在人体血糖平衡调节过程中，胰岛素和胰高血糖素起着重要作用。正常情况下，人体进食后短时间内这两种激素的含量变化是（   ）

选出下列各项中划线成语（或熟语）使用不规范的一项（    ）