为了达到良好的交互体验，以下哪些是交互反馈的 API
A. wx.showToast 显示消息提示框
B. wx.hideToast 隐藏消息提示框
C. wx.showModal 显示模态弹窗
D. wx.showActionSheet 显示操作菜单
查看答案
结合平时的案例，谈一谈你对微信常用API 的理解情况。比如文件下载完毕，可以使用 showToast 来提醒用户，网络请求可以使用 wx.request。为了适应不同屏幕的手机，可以在页面加载过程中使用 wx.getSystemInfo 获得目标手机的宽高等。
What is not the reason for her poor Mandarin speaking skills?
A. She was not taught Chinese in the right way.
B. She couldn’t stick to a self-motivated independent mandarin study program.
C. Mandarin tones are difficult to grasp.
D. Her Chinese teachers are not qualified.
… all my lessons I was promised by companies I worked for always fell through …What does the sentence mean?
A. The companies I worked for went broke.
B. I failed in the lessons provided by companies I worked for.
C. The lessons promised by companies I worked for never took place.
D. Companies I worked for were just able to offer me a few lessons.
He gave me a reason to suck at tones, my tongue isn't yellow enough!Which answer correctly interprets the sentence?
A. He helped me understand why I am so bad at distinguishing tones, for mandarin tones are easier for Asians than for westerners.
B. He explained why I am always confused by tones, only people with yellow skin are able to figure out the difference.
C. He helped me understand why I am so bad at pronouncing tones, I am not used to rolling my tongue.
D. He explained why I have difficulty in tones, Chinese language has so many dialects.
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