这些化学物质对我们的健康构成威胁。

These chemicals ___pose ___a ___threat to our health.

新的通信技术不会对面对面交流构成威胁。

New communication technologies do not ___pose ___a ___threat to face-to-face communication.

拟议的政策可能给小企业带来问题。

The proposed policy could ___pose ___a ___problem for small businesses.